Evaluation of reliability and validity of the patient health questionnaire-9 in patients with acne
Feng Xia, Ye Xin, Shu HuiLing, Yu Bei, Li Changqiang
Chinese Journal of Dermatology . 2019, (7): 461 -466 .  DOI: 10.3760/cma.j.issn.0412-4030.2019.07.004