title: Four measures of investigating ejaculatory performance.
authors: Marcel D
authors: MD
authors: Waldinger
mesh_terms: D000328:Adult; D003075:Coitus; D004542:Ejaculation; D006801:Humans; D008297:Male; D008418:Masturbation; D012735:Sexual Dysfunction, Physiological; D020018:Sexual Dysfunctions, Psychological