1 ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain; Instituto de Salud Tropical, Universidad de Navarra, Pamplona, Spain; Ifakara Health Institute, Ifakara, Tanzania.
2 ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain; Harvard T H Chan School of Public Health, Boston, MA 02115, USA. Electronic address: [email protected].