Factors associated with risk for unprotected receptive and insertive anal intercourse in men aged 40 and older who have sex with men

AIDS Care (2010) - Comment
pubmed: 20229374 doi: 10.1080/09540121003615137 issn: 1360-0451 issn: 0954-0121

Robin J. Jacobs, M. Isabel Fernandez, Raymond L. Ownby, G. Stephen Bowen, Patrick C. Hardigan, Michael N. Kane