Affiliation: | a Master of Arts, Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China;bDoctor of Medicine, Department of Nursing, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China;cDoctor of Medicine, Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China. |