Age-specific Cut-off Point for the Determination of Populations  of Late-onset Hypogonadism:a Study Conducted in Community-dwelling Middle-aged and Older Males in Chengdu 
YANG Fan,JIANG Xiaobo,CAO Hongyi,TANG Yi,YANG Jing,REN Xin,KANG Jun,WAN Haiyan
Chinese General Practice . 2019, (24): 2996 -2999 .  DOI: 10.12114/j.issn.1007-9572.2018.00.318