Shuichi Tsubura, Masahide Kanazawa, Shunya Oka, Rika Hirama, and Tsutomu Tsubura. 2021. “Using PF-MOUTH GELTM for Sore or Painful Tongue Improved Symptoms and Stabilized Dryness and Trapping of Food: A Case Report”. Dentistry 7 (1):7-11. https://doi.org/10.17140/DOJ-7-143.