Extended drainage versus resection in surgery for chronic pancreatitis: a prospective randomized trial comparing the longitudinal pancreaticojejunostomy combined with local pancreatic head excision with the pylorus-preserving pancreatoduodenectomy. - Izbicki,J.R.; Bloechle,C.; Broering,D.C.; Knoefel,W.T.; Kuechler,T.; Broelsch,C.E. (Ann Surg, 1998)