1. Barriers to conducting clinical research in reproductive medicine: Latin America 
Fernando Zegers-Hochschild, M.D. 
Fertility and Sterility 
Volume 96, Issue 4, Pages (October 2011)
DOI: /j.fertnstert
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Expenditure on research and development as percentage of GDP, 2008 or latest available year.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2011 American Society for Reproductive Medicine Terms and Conditions