Jahn Albrecht, Bozorgmehr Kayvan, Müller Olaf
Institute of Public Health, Ruprecht-Karls-University Heidelberg, D-69120 Heidelberg, Germany.
Department of General Practice and Health Services Research, Ruprecht-Karls-University Heidelberg, D-69120 Heidelberg, Germany.
Lancet. 2015 Aug 29;386(9996):851-2. doi: 10.1016/S0140-6736(15)00007-0.