1 Institute for Global Health, University Heidelberg, 69120 Heidelberg, Germany; School of Medicine and Clinical Sciences, Levy Mwanawasa Medical University, Lusaka, Zambia. Electronic address: florian.neuhann@uni-heidelberg.de.
2 Lighthouse Clinic, Lilongwe, Malawi.
3 Institute for Global Health, University Heidelberg, 69120 Heidelberg, Germany.
4 Lighthouse Clinic, Lilongwe, Malawi; International Training and Education Center for Health, University of Washington, Seattle, WA, USA.
5 Department of Gastroenterology and Hepatology, University Hospital of Cologne, Cologne, Germany; Hypertension Center, University Hospital of Cologne, Cologne, Germany.