TY - JOUR AU - Lerch, M M; Stier, A; Wahnschaffe, U TI - Pancreatic pseudocysts: observation, endoscopic drainage, or resection? JO - Dtsch Arztebl Int VL - 106 PY - 2009 L3 - PubMed-ID: 19890418 SP - 614 EP - 621 N1 - et al. ER -