4Hillard A D, Waddell J J, Metzler M H, et al. Fluorosco- pically guided nasoenteric feeding tube placement verses bedside placement [J]. South Med J, 1995,88:425-428.
5Daly J M, Weintraub F N, Shou J, et al. Enteral nutrition during muhimodality therapy in upper gastrointestinal cancer patients [J]. Ann Surg, 1995,221 : 327-338.
