Observational Study
Copyright ©The Author(s) 2020.
World J Cardiol. May 26, 2020; 12(5): 210-219
Published online May 26, 2020. doi: 10.4330/wjc.v12.i5.210
Figure 1
Figure 1 Study population flow chart. SSS: Summed stress score; SDS: Summed difference score.