PT01.1: The Effects of Applying Gastric Residual Volume Management Protocol(GRVMP) in Critically Ill Patients. (September 2019) - Lee, C.H.; Peak, S.K.; Park, K.H.; Jang, Y.S.; Shin, C.S.; Cho, J.H.; Na, S.H.; Choi, Y.S.; Kim, S.N.; Lee, J.E.; Lee, D.W.; Choi, P.R.; et al.