title: Physicians find a "virtual club" through a Web site called POL (Physicians' Online).
authors: J
authors: J
authors: Herreria
mesh_terms: D000329:Advertising; D006801:Humans; D007255:Information Services; D020407:Internet / Q000706:statistics & numerical data; D007400:Interprofessional Relations; D008389:Marketing of Health Services; D009862:Online Systems; D010820:Physicians; D012955:Societies, Medical; D014481:United States