Sleep Apnea and Substance Use Disorders Associated with Co-Occurrence of Anxiety Disorder and Depression among U.S. Adults: Findings from the NSDUH 2008–2014 oleh Chun Xu, Priscila Acevedo, Liang Wang, Nianyang Wang, Kaysie Ozuna, Saima Shafique, Annu Karithara, Victoria Padilla, Chunxiang Mao, Xin Xie, Kesheng Wang