Shahani, S MKulkarni, P P1982-10-012009-05-271982-10-012009-05-271982-10-01Shahani SM, Kulkarni PP. Clinical evaluation of interval contraception by norethindrone acetate implant. Indian Journal of Medical Research. 1982 Oct; 76(): 561-4http://imsear.searo.who.int/handle/123456789/19727engAdolescentAdultContraception --methodsDrug ImplantsFemaleHumansNorethindrone --administration & dosagePregnancySilicone Elastomers --administration & dosageTime FactorsJournal Article