Prevalence of depression and depressive symptoms among outpatients: a systematic review and meta-analysis
Jinghui Wang, Xiaohang Wu, Weiyi Lai, Erping Long, Xiayin Zhang, Wangting Li, Yi Zhu, Chuan Chen, Xiaojian Zhong, Zhenzhen Liu, Dongni Wang, Haotian Lin
BMJ Open Aug 2017, 7 (8) e017173; DOI: 10.1136/bmjopen-2017-017173