Breaking down breakfast: the relationship between morning meals and learning difficulties in adolescents. - Rahmanian R; Pirbasti AR; Shaygantabar M; Javaheri-Tafti F; Bahreini-Boroujeni LZ; Hatami A; Khoshrang A; Sajedi L; Ajami M; Esmaili M; Houshiarrad A; Doaei S (BMC pediatrics, 2026)