[1] Univ N Carolina, Dept Obstet & Gynecol, Div Reprod Endocrinol & Infertil, Chapel Hill, NC USA
[2] CHA Univ, CHA Seoul Fertil Ctr, Dept Obstet & Gynecol, Seoul, South Korea
[3] Univ Calif San Diego, Moores Canc Ctr, La Jolla, CA 92093 USA
[4] Univ Massachusetts, Dept Biostat & Epidemiol, Sch Publ Hlth & Hlth Sci, Amherst, MA 01003 USA
[5] San Diego State Univ, Dept Psychol, San Diego, CA 92182 USA
[6] Oregon State Univ, Sch Social & Behav Hlth Sci, Coll Publ Hlth & Human Sci, 2250 SW Jefferson Way, Corvallis, OR 97331 USA