1. Chan M, Kazatchkine M, Lob-Levyt J, Obaid T, Schweizer J, Sidibe M, et al. Meeting the demands for results and accountability: a call for action on health data from eight health agencies. PLoS Med. 2010;7:e1000223.
2. Stein C, Kuchenmueller T, Hendrickx S, Pruess-Ustun A, Wolfson L, Engels D, et al. The global burden of disease assessments – who is responsible? PLoS Med. 2007;1:e161.
3. Boerma T, Mathers C, Abouzahr C. WHO and global health monitoring: WHO and the way forward. PLoS Med. 2010;7:e1000373.
4. WHO Global Health Observatory. Maternal mortality. www.who.int/gho/maternal_health/mortality/maternal .
5. World Health Organization. Health statistics and information systems. Estimates for 2000–2012. http://www.who.int/healthinfo/global_burden_disease/estimates/en .