**5. References**


Vascellero, J.E. (2007). *Social Networking Goes Professional*. Wall Street Journal*.* Retrieved from

World Health Organization (2008). *International Health Regulations, 2005*. ISBN

http://online.wsj.com/article/SB118825239984310205.html

http://www.who.int/ihr/9789241596664/en/index.html

9789241580410. Accessed on September 03, 2011. Available from:
