[1] North Carolina State Univ, Dept Epidemiol, Asheville, NC USA
[2] Piedmont Womens Healthcare, Atlanta, GA USA
[3] North Carolina State Univ, North Carolina Inst Climate Studies, Asheville, NC USA
[4] Georgia Dept Publ Hlth, Div Epidemiol, Maternal & Child Hlth Epidemiol Unit, Atlanta, GA USA
[5] Georgia Dept Publ Hlth, Off Hlth Indicators Planning, Atlanta, GA USA
[6] Rollins Sch Publ Hlth, Dept Hlth Policy & Management, Atlanta, GA USA
[7] Emory Univ, Dept Gynecol & Obstet, Atlanta, GA USA
[8] Emory Univ, Rollins Sch Publ Hlth, Dept Epidemiol, 1518 Clifton Rd, Atlanta, NE USA