Lin, I-FanI-FanLinLi, Chung-YiChung-YiLiWang, Jung-DerJung-DerWang2009-06-102018-06-292009-06-102018-06-292008http://ntur.lib.ntu.edu.tw//handle/246246/161179application/pdf109341 bytesapplication/pdfen-USAnalysis of individual- and school-level clustering of power frequency magnetic fieldsjournal article10.1002/bem.20431