| Affiliation: | 1. Program in Reproductive and Adult Endocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland;2. Division of Biostatistics and Epidemiology, University of Massachusetts School of Public Health and Health Sciences, Amherst, Massachusetts;3. Uniformed Services University of the Health Sciences, Bethesda, Maryland;4. National Institutes of Health Library, Bethesda, Maryland;5. Shady Grove Fertility Reproductive Science Center, Rockville, Maryland |
