Ogasawara, Kouji, Susumu Nakajima, Hiroshi Sato, and Tadashi Sasaki. “Helicobacter Pylori Eradication Using Laser Endoscope and Methylene Blue”. Laser Therapy 29, no. 1 (April 18, 2020): 19–27. Accessed August 26, 2026. https://www.lasertherapyjournal.com/ltj/article/view/250.