1. Effect of oral and injectable contraceptives on the human chromosomes;Badr,1972
2. Mitotic indices and oral contraceptives;Bishun;Br. Med. J.,1971
3. Chromosomes after oral contraceptives;Carr;Lancet,1967
4. Chromosome studies in selected spontaneous abortions;Carr,1970
5. Longitudinal study of the effects of oral contraceptives on human chromosomes;De Gutierrez;Ann. Genet.,1973