Patterns of change in sexual behavior among gay men in New York City
1989 ◽
Vol 79
(4)
◽
pp. 501-503
◽
1995 ◽
Vol 8
(2)
◽
pp. 208???211
◽
2015 ◽
Vol 44
(7)
◽
pp. 2041-2053
◽
1977 ◽
Vol 4
(2)
◽
pp. 56-57
◽