Study on evaluation system of difficulty level of the clinical nursing operation technology in Tianjin
ZHANG Hua-fu1, WANG Xiang-hua1, ZHANG Yan2, ZHANG Hua2, CHEN Rong-xiu1
天津护理 . 2018, (2): 146 -151 .  DOI: 10.3969/j.issn.1006-9143.2018.02.006