Delavarian, Z., Pakfetrat, A., Badiee, Z., Ghazi, A., & Taghizadeh, A. "Extranodal Non-Hodgkin’s Lymphoma of the Oral Cavity Presenting as Gingival Swelling: A Case Report", Journal of Pediatric Perspectives, 8, 7, 2020, 11537-11542. doi: 10.22038/ijp.2020.49299.3945