Template:Ravich1951
Ravich A. Prophylaxis of cancer of the prostate, penis, and cervix by circumcision. New York State Journal of Medicine. June 1951; 51(12): 1519-20. PMID. Retrieved 6 October 2021.
Ravich A. Prophylaxis of cancer of the prostate, penis, and cervix by circumcision. New York State Journal of Medicine. June 1951; 51(12): 1519-20. PMID. Retrieved 6 October 2021.