Panambunan, meiyati, Pangkahila, Wimpie, AND Budhiarta, Anak Agung Gede. " Combination treatment of vildagliptin and bay leaf (Syzygium polyanthum) extract increased pancreatic beta cells number but have no effect toward glycated albumin levels in diabetic male Wistar rats (Rattus norvegicus)" IJAAM (Indonesian Journal of Anti-Aging Medicine) [Online], Volume 3 Number 2 (5 November 2019)