title: 113 letters from the Mayo Clinic: a pattern of medical referrals in the early 20th century.
authors.affiliation: Department of Family and Community Medicine, University of Louisville, KY, USA.
authors.forename: Richard I
authors.initials: RI
authors.lastname: Haddy
authors.forename: Theresa B
authors.initials: TB
authors.lastname: Haddy
mesh_terms: D015709:Correspondence as Topic / Q000266:history*; D005194:Family Practice / Q000266:history; D005260:Female; D013502:General Surgery / Q000266:history; D049673:History, 20th Century; D006770:Hospitals, Group Practice / Q000266:history*; D006801:Humans; D008297:Male; D008910:Minnesota; D012017:Referral and Consultation / Q000266:history*; D019035:Rural Health Services / Q000266:history