Retrospective Study
Copyright ©The Author(s) 2020.
World J Psychiatr. Apr 19, 2020; 10(4): 59-70
Published online Apr 19, 2020. doi: 10.5498/wjp.v10.i4.59
Figure 1
Figure 1 Selection of the study participants. COPD: Chronic obstructive pulmonary disease.