ecrin-mdr-crcClinical2017Gastric and colorectal cancerGastric And Colorectal CancerObservationalhttps://newmdr.ecrin.org/Study/2647784Japan8ECRIN MDRRecruitingfalseInvestigation of change of physical activity and function before and after operation for gastric and colorectal cancerPrimary outcome(s): Physical activity and function 1 month after operation2017-08-152647784JPRN-UMIN000032662