Yan, Jinchuan, Cuiping Wang, Rui Chen, and Haibing Yang. 2013. “ Clinical Implications of Elevated Serum Soluble CD137 Levels in Patients With Acute Coronary Syndrome ”. Clinics 68 (2): 193-98. https://doi.org/10.6061/CLINICS/2013(02)OA12.