Advancing the global health security agenda in light of the 2015 annual Hajj pilgrimage and other mass gatherings. (November 2015) - Elachola, Habida; Assiri, Abdullah; Turkestani, Abdual Hafiz; Sow, Samba S.; Petersen, Eskild; Al-Tawfiq, Jaffar A.; Memish, Ziad A.