Multi-center assessment of team demands and efficiency in the operating theater for minimally invasive and open approaches to hepatobilliairy and pancreatic surgery. (September 2018) - Van der Vliet, W.J.; Solis, M.; Haenen, S.M.; Verkoulen, K.; Moufarrej, A.; Neumann, U.P.; Dejong, C.H.C.; Moser, A.J.; van Dam, R.M.