PRACE DOKTORSKIE - SZWECJA 545,444 NASLUND INGMAR Gastric bypass versus gastroplasty : a prospective study of differences in two surgical procedures for morbid obesity : [thesis] / by Ingmar Naslund ; from the Departments of Surgery, Örebro Medical Centre Hospital and Huddinge Hospital, Karolinska Institute, Stockholm. — Stockholm : Kongl. Carolin-ska Medico Chirurgiska Institutet, 1987. — 60 s. : il., wykr. ; 24 cm (Acta Chirurgica Scandinavica ; Suppl. 536)