B. A. Evans, K. A. McLean, S. G. Dawson, S. A. Teece, R. A. Bond, K. D. MacRae et al
Evans B A, McLean K A, Dawson S G, Teece S A, Bond R A, MacRae K D et al.
Trends in sexual behaviour and risk factors for HIV infection among homosexual men, 1984-7.
British Medical Journal 1989; 298 :215
doi:10.1136/bmj.298.6668.215