Table 2.

MeSH (Medline) and EMtree (EMBASE) descriptors used in search strategy

Search
	MeSH descriptors
#1 Exposure	(HAZARDOUS WASTE + NT/CT) AND ((ENVIRONMENTAL HEALTH + NT/CT) OR ENVIRONMENTAL EXPOSURE + NT/CT))
#2 Health outcomes	(EPIDEMIOLOGY/CT)a OR (MORTALITY/CT)b
#3	#1 AND #2
	EMtree descriptors
#1 Exposure	*HAZARDOUS WASTE + NT/CT
#2 Health outcomes	EPIDEMIOLOGY + NT/CT
#3	#1 AND #2

^aEpidemiology: used with human and veterinary diseases for the distribution of disease, factors which cause disease, and the attributes of disease in defined populations; includes incidence, frequency, prevalence, endemic and epidemic outbreaks; also surveys and estimates of morbidity in geographic areas and in specified populations. Used also with geographical headings for the location of epidemiologic aspects of a disease. Excludes mortality for which “mortality” is used. (National Library of Medicine)

^bMortality: Used with human and veterinary diseases for mortality statistics. For deaths resulting from various procedures statistically but for a death resulting in a specific case, use FATAL OUTCOME, not /mortality. (National Library of Medicine)