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A SURVEY ON ENVIRONMENTAL HEALTH CONDITION IN DISTRICT OF KANN,TEHRAN,IRAN
Descriptive exploratory survey TEHRAN IRAN
2009/12/30
In the first half of year 1972 a descriptive exploratory survey was done on 75 selected households in District of Kann comprising 589 people. Selection was carried out by simple random sampling withou...
ENVIRONMENTAL HEALTH RISK OF CHRONIC EXPOSURE TO NITROUS OXIDE IN
dentistry nitrous oxide sedation occupational hazards
2010/12/24
Nitrous oxide may be used to alleviate dental anxiety and to diminish or eliminate dental pain. The benefit of nitrous oxide sedation is a cooperative and satisfied patient.