Chakrabarty, P BDas, B K1976-12-012009-05-311976-12-012009-05-311976-12-01Chakrabarty PB, Das BK. Strangulation of penis by metal ring. Journal of the Indian Medical Association. 1976 Dec; 67(11): 256http://imsear.searo.who.int/handle/123456789/102331engAdultHumansMaleMasturbationPenis --injuriesCase Reports