Sun H, Gao J, Li D, Li B. Observations on the clinical efficacy of rhaFGF combined with Vitamin B complex for patients with Severe Recurrent Aphthous Ulcer: Treatment of severe recurrent aphthous ulcer (RAU). Pak J Med Sci [Internet]. 2021Oct.6 [cited 2024Apr.19];37(7). Available from: https://pjms.org.pk/index.php/pjms/article/view/4364