Author contribution
Pauline Thémans: performed the analysis and wrote the manuscript. Nicolas Dauby, Loïc Schrooyen, Faustine Lebout, Marc Delforge, Rakan Nasreddinne, Agnès Libois, Marie-Christine Payen, Déborah Konopnicki: treated the patients, collected the data and wrote the manuscript. Francoise Wuillaume, Cecile Lescrainie, Veerle Verlinden, Jean-Michel Dogné, Jamila Hamdani : collected the data and wrote the mauscript. Flora T. Musuamba designed the study, performed the analysis and wrote the manuscript.