1. 1. Murray V, Soomaroo L. Disasters at mass gatherings: lessons from history. PLoS Currents. 2012;4:RRN1301.
2. 2. Wallis L, Smith W. Emergency Preparedness: Mass Gatherings. In: Nurbeam T, Boylan M, editors. ABC of Prehospital Emergency Medicine. West Sussex, UK: Johns Wiley & Sons Ltd; 2016. p. 190-4.
3. 3. Molloy MS, Sherif Z, Natin S, McDonnell J. Management of Mass Gatherings. In: Koenig KL, Schultz CH, editors. Koenig and Schultz's Disaster Medicine Comprehensive Priciples and Practices Disaster Medicine Comprehensive Priciples and Practices. First. USA: Cambridge University Press; 2010. p. 228-50.
4. 4. Marino P, Albergoni E, Andreassi A, Chiodini G. Mass gatherings in Italy: a study from the 2015 Milan Expo. J Health Soc Sci. 2016;1:91-8.
5. Research agenda for mass gatherings: A call to action;Tam;Lancet Infect Dis,2012