Diphtheria seroprotection among Indonesian children: Community Health Surveys Riskesdas 2007, 2013 and 2018 - Monica Dwi Hartanti; Sunarno Sunarno; Novaria Sari Dewi Panjaitan; Armedy Ronny Hasugian; Rita Marleta Dewi; Sarwo Handayani; Masri Sembiring Maha; Tubagus Ferdi Fadilah; Firda Fairuza; Nathalia Ningrum; Meiriani Sari; Dita Setiati; et al. (PLoS ONE, 2026)