Near Point of Convergence and Associated Factors in a Community Population 
LIU Bing,QI Zhanjiao,QIU Yuezhi,WANG Weilai,LUO Yanzhi
Chinese General Practice . 2021, (10): 1271 -1273 .  DOI: 10.12114/j.issn.1007-9572.2021.00.164