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- [1] The establishment of National Air Quality Health Index in ChinaENVIRONMENT INTERNATIONAL, 2020, 138Du, Xihao论文数: 0 引用数: 0 h-index: 0机构: Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R China Fudan Univ, NHC Key Lab Hlth Technol Assessment, Shanghai 200032, Peoples R China Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R ChinaChen, Renjie论文数: 0 引用数: 0 h-index: 0机构: Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R China Fudan Univ, NHC Key Lab Hlth Technol Assessment, Shanghai 200032, Peoples R China Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R ChinaMeng, Xia论文数: 0 引用数: 0 h-index: 0机构: Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R China Fudan Univ, NHC Key Lab Hlth Technol Assessment, Shanghai 200032, Peoples R China Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R ChinaLiu, Cong论文数: 0 引用数: 0 h-index: 0机构: Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R China Fudan Univ, NHC Key Lab Hlth Technol Assessment, Shanghai 200032, Peoples R China Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R ChinaNiu, Yue论文数: 0 引用数: 0 h-index: 0机构: Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R China Fudan Univ, NHC Key Lab Hlth Technol Assessment, Shanghai 200032, Peoples R China Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R ChinaWang, Weidong论文数: 0 引用数: 0 h-index: 0机构: Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R China Fudan Univ, NHC Key Lab Hlth Technol Assessment, Shanghai 200032, Peoples R China Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R ChinaLi, Shanqun论文数: 0 引用数: 0 h-index: 0机构: Fudan Univ, Zhongshan Hosp, Dept Pulm Med, Shanghai, Peoples R China Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R ChinaKan, Haidong论文数: 0 引用数: 0 h-index: 0机构: Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R China Fudan Univ, NHC Key Lab Hlth Technol Assessment, Shanghai 200032, Peoples R China Fudan Univ, Natl Ctr Childrens Hlth, Childrens Hosp, Shanghai, Peoples R China Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R ChinaZhou, Maigeng论文数: 0 引用数: 0 h-index: 0机构: Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R China Fudan Univ, Sch Publ Hlth, Key Lab Publ Hlth Safety, Minist Educ, Shanghai 200032, Peoples R China
- [2] Spatial-temporal variability of PM2.5 air quality in Beijing, China during 2013-2018JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2020, 262Xu, Xiaohong论文数: 0 引用数: 0 h-index: 0机构: Univ Windsor, Dept Civil & Environm Engn, 401 Sunset Ave, Windsor, ON N9B 3P4, Canada Univ Windsor, Dept Civil & Environm Engn, 401 Sunset Ave, Windsor, ON N9B 3P4, CanadaZhang, Tianchu论文数: 0 引用数: 0 h-index: 0机构: Univ Windsor, Dept Civil & Environm Engn, 401 Sunset Ave, Windsor, ON N9B 3P4, Canada Univ Windsor, Dept Civil & Environm Engn, 401 Sunset Ave, Windsor, ON N9B 3P4, Canada
- [3] Prevalence and Treatment of Diabetes in China, 2013-2018JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION, 2021, 326 (24): : 2498 - 2506Wang, Limin论文数: 0 引用数: 0 h-index: 0机构: Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R China Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaPeng, Wen论文数: 0 引用数: 0 h-index: 0机构: Qinghai Univ, Dept Publ Hlth, Coll Med, Nutr & Hlth Promot Ctr, Xining, Peoples R China Xi An Jiao Tong Univ, Global Hlth Inst, Xian, Peoples R China Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining, Peoples R China Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaZhao, Zhenping论文数: 0 引用数: 0 h-index: 0机构: Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R China Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaZhang, Mei论文数: 0 引用数: 0 h-index: 0机构: Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R China Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaShi, Zumin论文数: 0 引用数: 0 h-index: 0机构: Qatar Univ, Coll Hlth Sci, QU Hlth, Dept Human Nutr, Doha, Qatar Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaSong, Ziwei论文数: 0 引用数: 0 h-index: 0机构: Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R China Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaZhang, Xiao论文数: 0 引用数: 0 h-index: 0机构: Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R China Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaLi, Chun论文数: 0 引用数: 0 h-index: 0机构: Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R China Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaHuang, Zhengjing论文数: 0 引用数: 0 h-index: 0机构: Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R China Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaSun, Xiaomin论文数: 0 引用数: 0 h-index: 0机构: Xi An Jiao Tong Univ, Global Hlth Inst, Xian, Peoples R China Xi An Jiao Tong Univ, Sch Publ Hlth, Xian, Peoples R China Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaWang, Linhong论文数: 0 引用数: 0 h-index: 0机构: Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R China Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaZhou, Maigeng论文数: 0 引用数: 0 h-index: 0机构: Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaWu, Jing论文数: 0 引用数: 0 h-index: 0机构: Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R China Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R ChinaWang, Youfa论文数: 0 引用数: 0 h-index: 0机构: Xi An Jiao Tong Univ, Global Hlth Inst, Xian, Peoples R China Xi An Jiao Tong Univ, Sch Publ Hlth, Xian, Peoples R China Xi An Jiao Tong Univ, Affiliated Hosp 1, Clin Res Ctr Cardiovasc Dis, Xian, Peoples R China Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, 27 Nanwei Rd, Beijing 100050, Peoples R China
- [4] Association between dietary inflammation index and female infertility from National Health and Nutrition Examination Survey: 2013-2018FRONTIERS IN ENDOCRINOLOGY, 2024, 15Qi, Jie论文数: 0 引用数: 0 h-index: 0机构: Hebei Gen Hosp, Dept Gynecol, Shijiazhuang, Peoples R China Hebei Gen Hosp, Dept Gynecol, Shijiazhuang, Peoples R ChinaSu, Yujie论文数: 0 引用数: 0 h-index: 0机构: Qingdao Univ, Dept Gynecol, Shandong Prov Maternal & Child Hlth Care, Hosp Affiliated, Jinan, Shandong, Peoples R China Hebei Gen Hosp, Dept Gynecol, Shijiazhuang, Peoples R ChinaZhang, Huanhuan论文数: 0 引用数: 0 h-index: 0机构: Hebei Gen Hosp, Dept Anesthesiol, Shijiazhuang, Hebei, Peoples R China Hebei Gen Hosp, Dept Gynecol, Shijiazhuang, Peoples R ChinaRen, Yanan论文数: 0 引用数: 0 h-index: 0机构: Hebei Gen Hosp, Dept Gynecol, Shijiazhuang, Peoples R China Hebei Gen Hosp, Dept Gynecol, Shijiazhuang, Peoples R China
- [5] Metabolic Health, Obesity, and Renal Function: 2013-2018 National Health and Nutrition Examination SurveysLIFE-BASEL, 2021, 11 (09):Adair, Kathleen E.论文数: 0 引用数: 0 h-index: 0机构: Baylor Univ, Robbins Coll Hlth & Human Sci, Dept Hlth Human Performance & Recreat, One Bear Pl 97313, Waco, TX 76798 USA Baylor Univ, Robbins Coll Hlth & Human Sci, Dept Hlth Human Performance & Recreat, One Bear Pl 97313, Waco, TX 76798 USABowden, Rodney G.论文数: 0 引用数: 0 h-index: 0机构: Baylor Univ, Robbins Coll Hlth & Human Sci, Dept Publ Hlth, One Bear Pl 97313, Waco, TX 76798 USA Baylor Univ, Robbins Coll Hlth & Human Sci, Dept Hlth Human Performance & Recreat, One Bear Pl 97313, Waco, TX 76798 USAFunderburk, LesLee K.论文数: 0 引用数: 0 h-index: 0机构: Baylor Univ, Robbins Coll Hlth & Human Sci, Dept Hlth Human Performance & Recreat, One Bear Pl 97313, Waco, TX 76798 USA Baylor Univ, Robbins Coll Hlth & Human Sci, Dept Hlth Human Performance & Recreat, One Bear Pl 97313, Waco, TX 76798 USAForsse, Jeffrey S.论文数: 0 引用数: 0 h-index: 0机构: Baylor Univ, Robbins Coll Hlth & Human Sci, Dept Hlth Human Performance & Recreat, One Bear Pl 97313, Waco, TX 76798 USA Baylor Univ, Robbins Coll Hlth & Human Sci, Dept Hlth Human Performance & Recreat, One Bear Pl 97313, Waco, TX 76798 USAYlitalo, Kelly R.论文数: 0 引用数: 0 h-index: 0机构: Baylor Univ, Robbins Coll Hlth & Human Sci, Dept Publ Hlth, One Bear Pl 97313, Waco, TX 76798 USA Baylor Univ, Robbins Coll Hlth & Human Sci, Dept Hlth Human Performance & Recreat, One Bear Pl 97313, Waco, TX 76798 USA
- [6] A national review of porocarcinoma epidemiology in England 2013-2018BRITISH JOURNAL OF DERMATOLOGY, 2022, 187 : 15 - 16论文数: 引用数: h-index:机构:van Bodegraven, Birgitta论文数: 0 引用数: 0 h-index: 0机构: British Assoc Dermatol, London, England NHS Digital NHSD, Natl Dis Registrat Serv, Leeds, W Yorkshire, England Univ East Anglia, Fac Med & Hlth Sci, Norwich Med Sch, Norwich, Norfolk, EnglandCraig, Paul论文数: 0 引用数: 0 h-index: 0机构: Gloucestershire Hosp NHS Fdn Trust, Dept Cellular Pathol, Cheltenham, Glos, England Univ East Anglia, Fac Med & Hlth Sci, Norwich Med Sch, Norwich, Norfolk, EnglandLevell, Nick J.论文数: 0 引用数: 0 h-index: 0机构: Univ East Anglia, Fac Med & Hlth Sci, Norwich Med Sch, Norwich, Norfolk, England Norfolk & Norwich Univ Hosp NHS Fdn Trust, Dermatol, Norwich, Norfolk, England Univ East Anglia, Fac Med & Hlth Sci, Norwich Med Sch, Norwich, Norfolk, EnglandMistry, Khaylen论文数: 0 引用数: 0 h-index: 0机构: Univ East Anglia, Fac Med & Hlth Sci, Norwich Med Sch, Norwich, Norfolk, England Norfolk & Norwich Univ Hosp NHS Fdn Trust, Dermatol, Norwich, Norfolk, England Univ East Anglia, Fac Med & Hlth Sci, Norwich Med Sch, Norwich, Norfolk, England论文数: 引用数: h-index:机构:Vernon, Sally论文数: 0 引用数: 0 h-index: 0机构: NHS Digital NHSD, Natl Dis Registrat Serv, Leeds, W Yorkshire, England Univ East Anglia, Fac Med & Hlth Sci, Norwich Med Sch, Norwich, Norfolk, EnglandVenables, Zoe C.论文数: 0 引用数: 0 h-index: 0机构: Univ East Anglia, Fac Med & Hlth Sci, Norwich Med Sch, Norwich, Norfolk, England NHS Digital NHSD, Natl Dis Registrat Serv, Leeds, W Yorkshire, England Norfolk & Norwich Univ Hosp NHS Fdn Trust, Dermatol, Norwich, Norfolk, England Univ East Anglia, Fac Med & Hlth Sci, Norwich Med Sch, Norwich, Norfolk, England
- [7] China Medical Education College Survey, 2013-2018ECNU REVIEW OF EDUCATION, 2023, 6 (02) : 294 - 317You, You论文数: 0 引用数: 0 h-index: 0机构: Peking Univ, Beijing, Peoples R ChinaJia, Nali论文数: 0 引用数: 0 h-index: 0机构: Peking Univ, Beijing, Peoples R ChinaXie, Ana论文数: 0 引用数: 0 h-index: 0机构: Peking Univ, Beijing, Peoples R China Peking Univ, Beijing, Peoples R ChinaWang, Weimin论文数: 0 引用数: 0 h-index: 0机构: Peking Univ, Beijing, Peoples R China Peking Univ, Inst Med Educ, Beijing 100191, Peoples R China Peking Univ, Natl Ctr Hlth Profess Educ, Beijing 100191, Peoples R China Peking Univ, Beijing, Peoples R China
- [8] Meteorological Variables and Synoptic Patterns Associated with Air Pollutions in Eastern China during 2013-2018INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2020, 17 (07)Dai, Zhujun论文数: 0 引用数: 0 h-index: 0机构: China Meteorol Adm, Key Lab Transportat Meteorol, Nanjing 210008, Peoples R China Nanjing Meteorol Bur Jiangsu Prov, Nanjing 210019, Peoples R China China Meteorol Adm, Key Lab Transportat Meteorol, Nanjing 210008, Peoples R ChinaLiu, Duanyang论文数: 0 引用数: 0 h-index: 0机构: China Meteorol Adm, Key Lab Transportat Meteorol, Nanjing 210008, Peoples R China Jiangsu Inst Meteorol Sci, Nanjing 210008, Peoples R China Nanjing Joint Inst Atmospher Sci, Nanjing 210008, Peoples R China China Meteorol Adm, Key Lab Transportat Meteorol, Nanjing 210008, Peoples R ChinaYu, Kun论文数: 0 引用数: 0 h-index: 0机构: Nanjing Meteorol Bur Jiangsu Prov, Nanjing 210019, Peoples R China China Meteorol Adm, Key Lab Transportat Meteorol, Nanjing 210008, Peoples R ChinaCao, Lu论文数: 0 引用数: 0 h-index: 0机构: Meteorol Observ Jiangsu Prov, Nanjing 210008, Peoples R China China Meteorol Adm, Key Lab Transportat Meteorol, Nanjing 210008, Peoples R ChinaJiang, Youshan论文数: 0 引用数: 0 h-index: 0机构: Nanjing Meteorol Bur Jiangsu Prov, Nanjing 210019, Peoples R China China Meteorol Adm, Key Lab Transportat Meteorol, Nanjing 210008, Peoples R China
- [9] Infection trends in home health care, 2013-2018INFECTION CONTROL AND HOSPITAL EPIDEMIOLOGY, 2021, 42 (11): : 1388 - 1390Harrison, Jordan M.论文数: 0 引用数: 0 h-index: 0机构: RAND Corp, Pittsburgh, PA 15213 USA RAND Corp, Pittsburgh, PA 15213 USADick, Andrew W.论文数: 0 引用数: 0 h-index: 0机构: RAND Corp, Boston, MA USA RAND Corp, Pittsburgh, PA 15213 USAStone, Patricia W.论文数: 0 引用数: 0 h-index: 0机构: Columbia Univ, Sch Nursing, New York, NY USA RAND Corp, Pittsburgh, PA 15213 USAChastain, Ashley M.论文数: 0 引用数: 0 h-index: 0机构: Columbia Univ, Sch Nursing, New York, NY USA RAND Corp, Pittsburgh, PA 15213 USASorbero, Mark论文数: 0 引用数: 0 h-index: 0机构: RAND Corp, Pittsburgh, PA 15213 USA RAND Corp, Pittsburgh, PA 15213 USAFuruya, E. Yoko论文数: 0 引用数: 0 h-index: 0机构: New York Presbyterian Hosp, Dept Infect Prevent & Control, New York, NY USA Columbia Univ, Dept Med, Med Ctr, New York, NY USA RAND Corp, Pittsburgh, PA 15213 USAShang, Jingjing论文数: 0 引用数: 0 h-index: 0机构: Columbia Univ, Sch Nursing, New York, NY USA RAND Corp, Pittsburgh, PA 15213 USA
- [10] Systems epidemiology and cancer: A review of the National Institutes of Health extramural grant portfolio 2013-2018PLOS ONE, 2021, 16 (04):Shams-White, Marissa M.论文数: 0 引用数: 0 h-index: 0机构: NCI, Risk Factor Assessment Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA NCI, Risk Factor Assessment Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USABarajas, Rolando论文数: 0 引用数: 0 h-index: 0机构: NCI, Genom Epidemiol Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA NCI, Risk Factor Assessment Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USAJensen, Roxanne E.论文数: 0 引用数: 0 h-index: 0机构: NCI, Outcomes Res Branch, Healthcare Delivery Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA NCI, Risk Factor Assessment Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USARotunno, Melissa论文数: 0 引用数: 0 h-index: 0机构: NCI, Genom Epidemiol Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA NCI, Risk Factor Assessment Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USADueck, Hannah论文数: 0 引用数: 0 h-index: 0机构: NCI, Tumor Biol & Microenvironm Branch, Div Canc Biol, Bethesda, MD 20892 USA NCI, Risk Factor Assessment Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USAGinexi, Elizabeth M.论文数: 0 引用数: 0 h-index: 0机构: NIH, Off Behav & Social Sci Res, Bldg 10, Bethesda, MD 20892 USA NCI, Risk Factor Assessment Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USARogers, Scott D.论文数: 0 引用数: 0 h-index: 0机构: NCI, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA NCI, Risk Factor Assessment Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USAGillanders, Elizabeth M.论文数: 0 引用数: 0 h-index: 0机构: NCI, Genom Epidemiol Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA NCI, Risk Factor Assessment Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USAMechanic, Leah E.论文数: 0 引用数: 0 h-index: 0机构: NCI, Genom Epidemiol Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA NCI, Risk Factor Assessment Branch, Epidemiol & Genom Res Program, Div Canc Control & Populat Sci, Bethesda, MD 20892 USA