PMID 28604433. ↑ "Do Not Share Syringes: Department of Health". www.health.ri.gov. Retrieved 2017-10-30. ↑ "Health District, Trac-B Exchange, launch Southern Nevada's first needle exchange". southernnevadahealthdistrict.org. Retrieved 2017-10-30. ↑ Obadia, Yolande (December 1999).