[1] Ctr Dis Control & Prevent, Atlanta, GA USA
[2] Arizona State Univ, Phoenix, AZ USA
[3] NCI, Bethesda, MD 20892 USA
[4] Merrimack Coll, N Andover, MA 01845 USA
[5] MA England Coll, Henniker, NH USA
[6] Univ Tennessee, Chattanooga, TN USA
[7] Univ Texas Hlth Sci Ctr Houston, Sch Publ Hlth, Austin Reg Campus, Austin, TX USA
[8] Univ Texas Austin, Austin, TX 78712 USA
[9] Harvard Univ, Boston, MA 02115 USA
[10] Univ British Columbia, Vancouver, BC, Canada
[11] British Columbia Childrens Hosp, Child & Family Res Inst, Vancouver, BC, Canada
[12] Univ North Texas, Denton, TX USA
[13] Michigan State Univ, E Lansing, MI 48824 USA
[14] HealthPartners, Minneapolis, MN USA
[15] Ctr Dis Control & Prevent, Falls Church, VA USA
[16] Univ Washington, Seattle, WA 98195 USA
[17] Seattle Childrens Res Inst, Seattle, WA USA
[18] Univ Calif Calif, La Jolla, CA USA
[19] Univ Massachusetts, Amherst, MA 01003 USA
[20] Agcy Tox Subst & Dis Registry, Atlanta, GA USA