Worm, A M Roxithromycin and erythromycin in chlamydia-negative non-gonococcal urethritis. [electronic resource] - Acta dermato-venereologica 1990 - 269-71 p. digital Publication Type: Clinical Trial; Comparative Study; Controlled Clinical Trial; Journal Article ISSN: 0001-5555 Standard No.: 102340/0001555570269271 doi Subjects--Topical Terms: Chlamydia Infections--drug therapyDouble-Blind MethodErythromycin--administration & dosageGonorrhea--drug therapyHumansMaleRandom AllocationRoxithromycin--administration & dosageUrethritis--drug therapy