title: A referral-based periodontal practice--yesterday, today, and tomorrow.
authors.forename: Michael K
authors.initials: MK
authors.lastname: McGuire
authors.forename: E Todd
authors.initials: ET
authors.lastname: Scheyer
mesh_terms: D006801:Humans; D010517:Periodontics / Q000458:organization & administration*; D011215:Practice Management, Dental; D012017:Referral and Consultation