Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kanai Tadao,The System of Medical Specialists: The Significance of Existence for Proctologists,Nippon Daicho Komonbyo Gakkai Zasshi,0047-1801,The Japan Society of Coloproctology,2014,67,10,948-956,https://cir.nii.ac.jp/crid/1390282679831747968,https://doi.org/10.3862/jcoloproctology.67.948