IM Spence-Lewis MD, 01 Jan 2017 http://globalizationandhealth.biomedcentral.com/articles/10.1186/s12992-014-0061-0
IM Spence-Lewis MD, 21 Jun 2016 http://globalizationandhealth.biomedcentral.com/articles/10.1186/s12992-014-0061-0