Sildenafil use and increased risk of incident melanoma in US men: a prospective cohort study
JAMA Internal Medicine (2014) - Comments
pubmed: 24710960  doi: 10.1001/jamainternmed.2014.594  issn: 2168-6114  issn: 2168-6106 

Wen-Qing Li, Abrar A. Qureshi, Kathleen C. Robinson, Jiali Han