1. Clinical evaluation of side effects of current oral contraceptives;Nelson, J.H.;_J Reprod Med,1971
2. Contraceptive treatment with low doses of gestagens;Larsson-Cohn, U.;Acta Endocrinol [Suppl] (Kbh),1970
3. Effect of androgen-dominant and estrogen-dominant oral contraceptives on acne;Barranco, V.P.;Cutis,1974
4. Comparative pharmacologic evaluation of progesterone and other progestational steroids and their effectiveness in habitual abortion;Seidl, J.E.; Epstein, J.A.; Kupperman, H.S.;IntJ Fertil,1958
5. Progestational agents and the control of fertility;Pincus, G.;Vitam Horm,1959