RT Journal Article SR Electronic T1 Leukoplakia of the tongue JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 133 OP 134 DO 10.3949/ccjm.87a.19087 VO 87 IS 3 A1 Keiichi Ohta A1 Hitoshi Yoshimura YR 2020 UL http://www.ccjm.org/content/87/3/133.abstract AB