Retyono, Sugeng, Setyo Sri Rahardjo, and Bhisma Murti. 2020. “Multilevel Analysis: Village Does Not Have Contextual Effect on Hepatitis A Outbreak in Pacitan, East Java, Indonesia”. Journal of Epidemiology and Public Health 5 (2):195-206. https://jepublichealth.com/index.php/jepublichealth/article/view/267.