[A study on the recent suicidal tendency from the view-point of ambulance business].
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000552:Ambulances / Q000706:statistics & numerical data*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012621:Seasons; D012737:Sex Factors; D013405:Suicide / Q000453:epidemiology*; D014041:Tokyo