You have access
Influenza-like syndrome in homosexual men: a prospective diagnostic study
Frank de Wolf, Joep M.A. Lange, Margreet Bakker, Steven Tjong-A-Hung, Christa Hooykaas, Roel Coutinho, Jan van der Noordaa and Japp Goudsmit
The Journal of the Royal College of General Practitioners 1988; 38 (315): 443-446.