%0 Journal Article %A Ko Matsuoka %A Ryota Tanaka %A Toshifumi Nomura %T Pencil-core granuloma %D 2022 %R 10.1503/cmaj.211094 %J Canadian Medical Association Journal %P E14-E14 %V 194 %N 1 %U https://www.cmaj.ca/content/cmaj/194/1/E14.full.pdf