Back, D J The relative bioavailability of levonorgestrel and ethinylestradiol when administered in tablet and capsule form. [electronic resource] - Contraception Sep 1987 - 321-6 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial ISSN: 0010-7824 Standard No.: 10.1016/0010-7824(87)90102-8 doi Subjects--Topical Terms: AdolescentAdultBiological AvailabilityCapsulesClinical Trials as TopicContraceptives, Oral, Combined--administration & dosageEthinyl Estradiol--administration & dosageFemaleHumansLevonorgestrelNorgestrel--administration & dosageRandom AllocationTablets