Roger Welter

New Technology and Advanced Techniques in Minimally Invasive Surgery  Felicien Steichen MD Roger Welter MD Hardcover. Blackwell Science Ltd, 1999-02-28 ISBN 9780632041886     Minimally Invasive Surgery and New Technology  Felicien M. Steichen Roger Welter Hardcover. W.B. Saunders Company, 1994-01-15 ISBN 9780942219517     Current Practice of Surgical Stapling  luxem International Symposium on Stapling in Surgery 1988 Luxembourg Felicien M. Steichen Mark M. Ravitch Roger Welter Luxembourg) European Congress on Stapling in Surgery 1988 (Luxembourg Hardcover. Lea & Febiger, 1991-01-09 ISBN 9780812113280