IM Spence-Lewis MD,
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4718522/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4718522/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4718522/
https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1001942
http://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1001942