@article{oai:sapmed.repo.nii.ac.jp:00015366,
 author = {神村, 瑞夫 and 神村, 真木子 and 中杉, 勇},
 issue = {5},
 journal = {札幌医学雑誌 = The Sapporo medical journal, The Sapporo medical journal},
 month = {Oct},
 note = {The direct observation and a questionnaire survey were carried out on primary school children of northern Okinawa, and the fo llowing conclusions were obtained. 1） We observed 7 patients, 5 were M-type and 2 were T-type. 2） As a result of 244 questionnaires, 15% had a history of pernionis amounting to 36 children. （In Nago 7% inchildren, in Genka 19% and in Izumi 31% had a history.） 3） The month of contraction was September to April and many children had signs of pernionis in December and January. 4） There was a relationship of children and their families with regards to perniosis, especially in Nago and Izumi. 5） In eruption type, M-type was numerous, amounting to 75% of the total cases. 6） The percentage of pernionis in children in Okinawa were less than in the Kanto area, but inthe eruption type M-type was numerous, the time of onset was closer to the Hokkaido-type.},
 pages = {491--497},
 title = {凍瘡の研究 (そのVIII) : 沖縄の凍瘡 (学童の調査から)},
 volume = {49},
 year = {1980}
}