Clinical Trials Study
Copyright ©The Author(s) 2021.
World J Clin Cases. Aug 6, 2021; 9(22): 6308-6318
Published online Aug 6, 2021. doi: 10.12998/wjcc.v9.i22.6308
Figure 1
Figure 1 Protocol flow diagram. MMP-9: Matrix metallopeptidase 9; TIMP-1: Tissue inhibitor of metalloproteinases 1; CPET: Cardiopulmonary exercise testing;