RT Journal Article SR Electronic T1 Autoimmune blisters in the gingiva JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e238011 DO 10.1136/bcr-2020-238011 VO 13 IS 9 A1 Ryo Sasaki A1 Toshihiro Okamoto YR 2020 UL http://casereports.bmj.com/content/13/9/e238011.abstract AB