1. Study of the incidence of hypospadias in Rochester, Minnesota, 1940-1970, and a case-control comparison of possible etiologic factors;Sweet;Mayo Clin. Proc.,1974
2. Horton, C. E., Devine, C. J., Jr.: Hypospadias and epispadias. CIBA Clinical Symposia, vol. 24, 1972.
3. Clinical and cytogenetic studies in hypospadias;Aarskog;Acta Paed. Scand.,1970
4. Production of hypospadias in the rat by selective inhibition of fetal testicular 17 alpha-hydroxylase and C17-20-lyase;Goldman;Endocrinology,1971
5. Anomalies of the genital tract;Campbell,1963