Takahara, M., Fukuda, M., Matsuzawa, Y., & Shimomura, I. (2020). Effect of tasteless calorie-free gum chewing before meal on postprandial plasma glucose, insulin, glucagon, and gastrointestinal hormones in Japanese men without diagnosed glucose metabolism disorder: a pilot randomized crossover trial. Diabetology International, 11(4), 394-402. https://doi.org/10.1007/s13340-020-00435-9