title: Super-specialization fellowships in gastrointestinal surgery: an unrealistic dream.
authors.forename: W
authors.initials: W
authors.lastname: Silen
mesh_terms: D005257:Fellowships and Scholarships; D005767:Gastrointestinal Diseases / Q000601:surgery*; D006801:Humans; D013043:Specialties, Surgical; D014481:United States