Napitupulu, F.; Sinurat, S. J.; Tamariahna, E.; Simanjuntak, V.; Sipayung, Y. A. Socialization of Diarrhea Prevention in School-Age Children Using Healthy Pocket Media at Elementary School UPT 101800 Deli Tua Timur, Deli Tua District, Deli Serdang Regency. JKPI 2026, 10.