%0 Journal Article %T Higher levels of physical activity are independently associated with a lower incidence of diabetic retinopathy in Japanese patients with type 2 diabetes: A prospective cohort study, Diabetes Distress and Care Registry at Tenri (DDCRT15) %A Hirohito Kuwata %A Hitoshi Ishii %A Satoru Tsujii %A Shintaro Okamura %A Yasuaki Hayashino %A for the Diabetes Distress and Care Registry at Tenri Study Group %J Archive of "PLoS ONE". %D 2017 %R 10.1371/journal.pone.0172890 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5336240/