[OBSERVATIONS ON THE INCIDENCE OF CHRONIC SINUSITIS].
D000293:Adolescent; D002648:Child; D002908:Chronic Disease; D006801:Humans; D015994:Incidence; D007223:Infant; D007564:Japan; D012852:Sinusitis; D013223:Statistics as Topic; D013514:Surgical Procedures, Operative
ADOLESCENCE; CHILD; INFANT; JAPAN; SINUSITIS; STATISTICS; SURGERY, OPERATIVE