Dr. Tidiane Ndoye, Senior Lecturer, Department of Sociology, Cheikh Anta Diop University, is the team's principal investigator in Senegal. He is a socio-anthropologist specializing in health evaluation issues. He teaches at Cheikh Anta Diop University of Dakar, trains in qualitative research methodology and has international professional experience in project and program management and monitoring. He has worked in a regional project (Benin, Burkina Faso, Mali, Senegal) on monitoring and capacity building of patients led by the School of Public Health (ESP) of the Université Libre de Bruxelles (ULB). He has conducted training in many countries [Senegal, France, Belgium, etc.], particularly in Health Systems Research (HSR) at the ULB ESP. He has a strong experience of collaboration in multicultural, international teams and has coordinated several research projects on population health in Africa. He is an expert in the use and training of qualitative analysis software (Nvivo, Atlas.Ti).