title: Lessons learned.
authors.affiliation: Division of Gastroenterologic and General Surgery, Mayo Clinic, Rochester, MN 55905, USA.
authors.forename: J A
authors.initials: JA
authors.lastname: van Heerden
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D006961:Hyperparathyroidism / Q000175:diagnosis / Q000601:surgery*; D008297:Male; D012086:Reoperation; D017211:Treatment Failure