[1] Univ Washington, Dept Family Med, Seattle, WA 98195 USA
[2] Univ Texas, Hlth Sci Ctr, Sch Nursing, San Antonio, TX USA
[3] Univ Rochester, Sch Med, Rochester, NY USA
[4] Tri Cty Family Med, Cohocton, NY USA
[5] Natl Initiat Childrens Healthcare Qual, Boston, MA USA
[6] Univ Med & Dent New Jersey, New Jersey Med Sch, Dept Family Med, Newark, NJ 07103 USA
[7] Harvard Pilgrim Hlth Care, Dept Ambulatory Care & Prevent, Boston, MA USA
[8] Harvard Univ, Sch Med, Boston, MA USA
[9] Univ Texas, Hlth Sci Ctr, Audie L Murphy Mem Vet Hosp, San Antonio, TX USA
[10] Robert Wood Johnson Fdn, Princeton, NJ 08540 USA
[11] Women & Infants Hosp Rhode Isl, Providence, RI 02908 USA
[12] Univ Michigan, Sch Nursing, Ann Arbor, MI 48109 USA
[13] Mt Sinai Sch Med, Div Gen Internal Med, New York, NY USA
[14] Mt Sinai Sch Med, Primary Care & Med Serv Care Ctr, New York, NY USA
[15] Mt Sinai Med Ctr, New York, NY 10029 USA
[16] Merck & Co Inc, Outcomes Res & Management, West Point, PA USA
[17] Columbia Univ Coll Phys & Surg, Dept Obstet & Gynecol, New York, NY 10032 USA
[18] Virginia Commonwealth Univ Med Coll Virginia, Dept Family Practice, Fairfax, VA USA