1. World Health Organization Regional Office for South-East Asia. WHO South East Asia Regional Immunization Technical advisory Group (SEAR-ITAG); report of the seventh meeting SEAR-ITAG, New Delhi, India; 2016.
2. UNICEF Supply Division Vaccine Procurement. Vaccination ecosystem health check: achieving impact today and sustainability for tomorrowl 2015. [accessed 23.09.15].
3. Determining measles-containing vaccine demand and supply: an imperative to support measles mortality reduction efforts;Costa;JID,2003
4. Pre-empting and responding to vaccine supply shortages. SAGE. Executive summary; 2016. [accessed 16.11.16].
5. UNICEF. Supplies and logistics. Vaccine security; 2012. [accessed 16.11.1].