[1] NIH, Dept Reprod Endocrinol & Infertil, Bldg 10, Bethesda, MD 20892 USA
[2] Univ Colorado, Dept Reprod Endocrinol & Infertil, Aurora, CO USA
[3] Eastern Virginia Med Sch, Dept Reprod Endocrinol & Infertil, Norfolk, VA 23501 USA
[4] Shady Grove Fertil, Rockville, MD USA
[5] Shady Grove Fertil, New York, NY USA
[6] Walter Reed Natl Mil Med Ctr, Dept Reprod Endocrinol & Infertil, Bethesda, MD USA
[7] Shady Grove Fertil, Washington, DC USA