Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Takatori Etsuko and Takahashi Chieko and Ryu Mizue and Hayashi Masao and Fukuda Masatoshi and Hirata Yukimasa,Measurement of the Degree of Diabetic Retinopathy,Journal of the Japan Diabetes Society,0021437X,THE JAPAN DIABETES SOCIETY,1978,21,11,975-982,https://cir.nii.ac.jp/crid/1390282679880157568,https://doi.org/10.11213/tonyobyo1958.21.975