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The authors observed 322 cases of paralytic poliomyelitis who visited the pediatric service of Severance hospital during 3 years from 1962 to 1964. Observations 1)The heighest age incidence was from 7 months to 3 years (92.4%) 2)The incidence in male was more frequent than in females (Male 61.2%, female 38.8%) 3)Seasonal occurrence was more frequent from June to September... |
