Corrigendum to 'Association between sleep duration and hemoglobin A1c level' [Sleep Med 9 (2008) 745–752]

Corrigendum Corrigendum to ‘‘Association between sleep duration and hemoglobin A1c level” [Sleep Med 9 (2008) 745–752] Hiromi Nakajima , Yoshitaka Kaneita *, Eise Yokoyama , Satoru Harano , Tetsuo Tamaki , Eiji Ibuka , Akiyo Kaneko , Ippei Takahashi , Takashi Umeda , Shigeyuki Nakaji , Takashi Ohida a Division of Public Health, Department of Social Medicine, Nihon University, Tokyo, Japan Department of Social Medicine, School of Medicine, Hirosaki University, Hirosaki, Japan