Prevalence of Anti-HBs Without Anti-HBc Among HIV-Infected Adults Initiating Antiretroviral Therapy in Lilongwe, Malawi. (1st July 2018) - Demir, Münevver; Phiri, Sam; Heger, Eva; Heller, Tom; Kaiser, Rolf; Chaweza, Thom; Fätkenheuer, Gerd; Steffen, Hans-Michael; Neuhann, Florian