1. Urethritis in males;Bowie,1984
2. Die infektiöse nichtgonorrhoische Urethritis des Mannes;Bredt;Urologe A,1981
3. Bergey's Manual of Determinative Bacteriology,1974
4. 1985 STD treatment guidelines;J. Amer. Acad. Dermatol.,1986
5. The Analysis of Contingency Tables;Everitt,1977