Epidural analgesia in patients undergoing pancreatoduodenectomy: A systematic review and meta-analysis (CRD42018085818). (2020) - Groen, J.; Khawar, A.; Bauer, P.; Bonsing, B.; Martini, C.; Mungroop, T.; Vahrmeijer, A.; Vuijk, J.; Dahan, A.; Mieog, J.