[1] Oregon Hlth & Sci Univ, Dept Ob Gyn UHN 50, 3181 Sam Jackson Pk Rd, Portland, OR 97239 USA
[2] Princeton Univ, Off Populat Res, Wallace Hall, Princeton, NJ 08544 USA
[3] Univ Texas Austin, LBJ Sch Publ Affairs, POB Y, Austin, TX 78713 USA
[4] Sermonix Pharmaceut, 3000 East Main St,Suite 218, Columbus, OH 43209 USA
[5] Agile Therapeut, 101 Poor Farm Rd, Princeton, NJ 08540 USA