title: PHP: 30 years of throwing out a lifeline.
authors.affiliation: Tennessee Medical Foundation, Brentwood, TN 37027, USA.
authors.forename: Roland W
authors.initials: RW
authors.lastname: Gray
mesh_terms: D006801:Humans; D010815:Physician Impairment; D010820:Physicians; D012017:Referral and Consultation; D012955:Societies, Medical; D016320:Substance Abuse Treatment Centers; D019966:Substance-Related Disorders / Q000534:rehabilitation*; D013714:Tennessee