Cheng, D., Fei, Y., Liu, Y., Li, J., Chen, Y., Wang, X., & Wang, N. (2014). Efficacy and Safety of Dipeptidyl Peptidase-4 Inhibitors in Type 2 Diabetes Mellitus Patients with Moderate to Severe Renal Impairment: A Systematic Review and Meta-Analysis. PLoS One.

Cheng, Dongsheng, Yang Fei, Yumei Liu, Junhui Li, Yuqiang Chen, Xiaoxia Wang, and Niansong Wang. "Efficacy and Safety of Dipeptidyl Peptidase-4 Inhibitors in Type 2 Diabetes Mellitus Patients With Moderate to Severe Renal Impairment: A Systematic Review and Meta-Analysis." PLoS One 2014.

Cheng, Dongsheng, et al. "Efficacy and Safety of Dipeptidyl Peptidase-4 Inhibitors in Type 2 Diabetes Mellitus Patients With Moderate to Severe Renal Impairment: A Systematic Review and Meta-Analysis." PLoS One 2014.