@book{498229,
	author = {World Health Organization},
	title = {WHO guideline on the use of safety-engineered syringes for intramuscular, intradermal and subcutaneous injections in health-care settings},
	publisher = {World Health Organization},
	year = {2015},
	address = {Ginebra},
	url = {http://www.who.int/injection_safety/global-campaign/injection-safety_guidline.pdf?ua=1}
}