Name	Info	Provider	Link
	free resource	International Brazilian J Urol	http://brazjurol.com.br/september_october_2015/Hoarau_920_926.pdf
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/26689517/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/26689517