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.