Studies about the State of Perceived Stress and Determining Risk Factors; case of Yemeni Students community Residing in MoroccoAbdulrahman taresh yahya Omair, Abderrahim Bakkali, Norelhouda Aroui, Malika Rafiq, Abdelmajid Soulaymani and Aberrazzak KhadmaouilE3S Web Conf., 319 (2021) 02008DOI: https://doi.org/10.1051/e3sconf/202131902008