6,360
Participants
Start Date
December 31, 1999
Study Completion Date
December 31, 2002
Ethinyl estradiol/levonorgestrel
Medroxyprogesterone acetate
Amy Lovvorn, Research Triangle Park
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH