Differences in the effects of Kenyan, Tanzanian, and Ethiopian coffee intake on interstitial glucose levels measured by FreeStyle Libre: A pilot case study oleh Junichi Okada, MD, PhD, Aya Osaki, MD, PhD, Yoko Shimoda, MD, PhD, Eijiro Yamada, MD, PhD, Tsugumichi Saito, MD, PhD, Atsushi Ozawa, MD, PhD, Yasuyo Nakajima, MD, PhD, Kazuya Okada, MD, Shuichi Okada, MD, PhD, Masanobu Yamada, MD, PhD