Pathan, M. F.; Amin, M. F.; Afsana, F.; Rahim, M. S. A.; Sarker, M. J. A.; Ali, T. M.; Rahman, M. M.; Hasan, F. Efficacy and Safety of Vildagliptin Compared to Sulphonylurea in Patients With Type 2 Diabetes During Fasting in Ramadan. J. Bangladesh Coll. Phys. 2016, 33, 120-125.