title: A blind evaluation of a penile ring--a sex aid for impotent males.
mesh_terms: D002986:Clinical Trials as Topic; D003075:Coitus; D004325:Dreams; D004542:Ejaculation; D004599:Electric Stimulation Therapy; D007172:Erectile Dysfunction / Q000628:therapy*; D005069:Evaluation Studies as Topic; D006801:Humans; D007989:Libido; D008297:Male; D010919:Placebos; D013165:Splints
chemical_list: D010919:Placebos