Factors Associated with Hepatitis B and Hepatitis C among Infected Patients in Indonesia and Their Knowledge and Attitude: A Multicenter Observational Study oleh Juferdy Kurniawan, Gita Aprilicia, Hery Djagat Purnomo, Cecilia O Permatawedi, Ulfa Kholili, Tehar Karo-Karo, Haris Widita, Aritantri Darmayani, Arif Nur Widodo, Nenny Agustanti, Saptino Miro, Suyata Suyata, Fauzi Yusuf, Catharina Triwikatmani, Syifa Mustika, Rini R Bachtiar, Fandy Gosal, I Ketut Mariadi, Irsan Hasan