Hajj pilgrims’ knowledge about Middle East respiratory syndrome coronavirus, August to September 2013 
Gautret, P and Benkouiten, S and Salaheddine, I and Belhouchat, K and Drali, T and Parola, P and Brouqui, P, Eurosurveillance, 18, 20604 (2013), https://doi.org/10.2807/1560-7917.ES2013.18.41.20604