The Efficacy of 5% Propolis Gel in the Treatment of Primary Herpetic Gingivostomatitis in Children and Its Effect on Salivary IFN-γ Levels: A Parallel Randomized Controlled Pilot Trial. - Shalaby R; Sadek GEM; Gamil Y; Elsayed MM; Essawy AM; Al-Sawahli M; Sabieha AM; Refai SE; Ibrahim S; Aly EH; Afifi S (European journal of dentistry, 2026)