Epicardial Fat Thickness and Severity of Obstructive Sleep Apnea-hypopnea Syndrome in Obese and Nonobese Patients 
MA Xiao,LU Ying,CHEN Qianhua
Chinese General Practice . 2019, (17): 2052 -2057 .  DOI: 10.12114/j.issn.1007-9572.2019.00.143