E. Frei (Frei, E.)

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  Acute Appendicitis: Standard Treatment and the Role of Laparoscopic Surgery
  by L. Krahenbuhl
  Hardcover, S Karger Pub, ISBN 3805566417 (3-8055-6641-7)
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  Five Years of Laparoscopic Cholecystectomy: A Reappraisal International Meeting, May 5-6, 1995, Bern, Switzerland
  by M.W. Buchler
  Hardcover, S Karger Pub, ISBN 3805562713 (3-8055-6271-3)
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  Gastroesophageal Reflux Disease (Gerd): Back to Surgery?
  by E. Frei, M.W. Buchler, L. Krahenbuhl, Ch Klaiber
  Hardcover, S Karger Pub, ISBN 3805564767 (3-8055-6476-7)
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  Laparoscopic Hernia Repair: A New Standard? International Meeting, May 6-7, 1994, Bern, Switzerland
  by E. Frei, M.W. Buchler, Ch Klaiber
  Hardcover, S Karger Pub, ISBN 3805560478 (3-8055-6047-8)