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Kadowaki, Takashi, Naoko Tajima, Masato Odawara, Mikio Nishii, Tadaaki Taniguchi, and Juan Camilo Arjona Ferreira. Addition of Sitagliptin to Ongoing Metformin Monotherapy Improves Glycemic Control in Japanese Patients With Type 2 Diabetes Over 52 weeks. Wiley-Blackwell, 2012.

Kadowaki, Takashi, et al. Addition of Sitagliptin to Ongoing Metformin Monotherapy Improves Glycemic Control in Japanese Patients With Type 2 Diabetes Over 52 weeks. Wiley-Blackwell, 2012.