Increasing Knowledge of Class VI Elementary School Students About the Dangers of Rheumatoid Arthritis (RA) at Public Elementary School 106830 Sidodadi Ramunia Village Lubuk Pakam. JURNAL PENGMAS KESTRA (JPK), [S. l.], v. 4, n. 2, p. 203–208, 2024. DOI: 10.35451/jpk.v4i2.2386. Disponível em: https://ejournal.medistra.ac.id/index.php/JPK/article/view/2386. Acesso em: 4 dec. 2025.