Lulus Hardiyanti; Anindya Khairunnisa Zahra; Fara Azmiarrizqi; Amelia Nur Khasanah; Sheila Agustina; Ardiyuga Pratitapraya; Puguh Oktavian. Association Between Undernutrition and Language Delay in Children under 5 Years Old: A Systematic Review. InaJBCS 2025, 57.