1. Declining trends in some sexually transmitted diseases in Belgium between 1983 and 1989;Walckiers;Genitourin Med,1991
2. Declining gonorrhoea rates in the Netherlands 1976-88: consequences for the AIDS epidemic;Laar;Genitourin Med,1990
3. Fear of AIDS and gonorrhoea rates in homosexual men;Judson;Lancet,1983