Knowledge, attitude, and practices toward malaria among hospital outpatients in Nangarhar, Afghanistan: A cross-sectional study oleh Arash Nemat, Abdul Ghafar Sherzad, Ehsanullah Ehsan, Asadullah Hussainzai, Mehrab Naderi, Naqeebullah Zaki, Mohammad Yasir Essar, Wafaa Binti Mowlabaccus, Michael G Head, Abdullah Asady