Received: 16 May 2019
Accepted: 7 November 2019
First Online: 6 January 2020
Ethics approval and consent to participate
: The research protocol adhered to the principles outlined in the Declaration of Helsinki and was pre-approved by the direction of the <i>Centre de Documentation et d’Information sur l’Enseignement Supérieur</i> (CEDIES) and approved by the Ethics Committee of the Institute for Research on Sociology & Economic Inequalities. Postgraduates participating in the survey were informed of the study objectives and signed a consent form.
: Not applicable.
: The authors declare that they have no competing interests.