LENG Yu-qing, LI Yu-feng, SHANG Yue-e, GAO Hong, LIOU Yu-yu. Efficacy observation of grading nursing intervention on prevention of sudden medical accidents in high-risk patients[J]. Journal of Clinical Medicine in Practice, 2012, (16): 154-156. DOI: 10.3969/j.issn.1672-2353.2012.16.065