title: Friendship matters.
authors.forename: M W
authors.initials: MW
authors.lastname: Serafini
mesh_terms: D000574:American Medical Association; D006269:Health Facilities, Proprietary / Q000191:economics / Q000331:legislation & jurisprudence; D006279:Health Maintenance Organizations / Q000191:economics* / Q000331:legislation & jurisprudence; D009096:Multi-Institutional Systems / Q000191:economics* / Q000331:legislation & jurisprudence; D014481:United States