Vasectomy and prostate cancer. Chance, bias, or a causal relationship?

Editorial

S S Howards et al. JAMA. 1993.

. 1993 Feb 17;269(7):913-4.

No abstract available

Comment in

Vasectomy and increased risk of prostate cancer.
Perlman JA, Brawley OW, Ford LG, Kramer BS. Perlman JA, et al. JAMA. 1993 Aug 11;270(6):706-7. doi: 10.1001/jama.1993.03510060051021. JAMA. 1993. PMID: 8336364 No abstract available.
Vasectomy and increased risk of prostate cancer.
Ubachs JM, van Wersch JW. Ubachs JM, et al. JAMA. 1993 Aug 11;270(6):707-8. doi: 10.1001/jama.1993.03510060051023. JAMA. 1993. PMID: 8336366 No abstract available.

A retrospective cohort study of vasectomy and prostate cancer in US men.
Giovannucci E, Tosteson TD, Speizer FE, Ascherio A, Vessey MP, Colditz GA. Giovannucci E, et al. JAMA. 1993 Feb 17;269(7):878-82. JAMA. 1993. PMID: 8123059
A prospective cohort study of vasectomy and prostate cancer in US men.
Giovannucci E, Ascherio A, Rimm EB, Colditz GA, Stampfer MJ, Willett WC. Giovannucci E, et al. JAMA. 1993 Feb 17;269(7):873-7. JAMA. 1993. PMID: 8426446