Prevalence of anti-HBs without anti-HBc among HIV-infected adults initiating antiretroviral therapy in Lilongwe, Malawi - Demir, Münevver; Phiri, Sam; Heger, Eva; Heller, Tom; Kaiser, Rolf; Chaweza, Thom; Fätkenheuer, Gerd; Steffen, Hans Michael; Neuhann, Florian (Journal of acquired immune deficiency syndromes, 2018)