Photobiomodulation for the treatment and prevention of chemotherapy- and/or radiotherapy-induced oral mucositis in cancer patients: a systematic review and meta-analysis of randomized clinical trials published in the last six years. - G R; R EP; A D; G TÁ; P MG; Fm S; C SR (Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer, 2026)