Editing Polychlorinated biphenyl (section)

===Japan===
In 1968, a mixture of dioxins and PCBs got into rice bran oil produced in northern [[Kyushu]]. Contaminated cooking oil sickened more than 1,860 people. The symptoms were called [[Yushō disease]].<ref name="Aoki">{{cite journal | vauthors = Aoki Y | title = Polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins, and polychlorinated dibenzofurans as endocrine disrupters—what we have learned from Yusho disease | journal = Environmental Research | volume = 86 | issue = 1 | pages = 2–11 | date = May 2001 | pmid = 11386736 | doi = 10.1006/enrs.2001.4244 | bibcode = 2001ER.....86....2A }}</ref>

In Okinawa, high levels of PCB contamination in soil on [[Kadena Air Base]] were reported in 1987 at thousands of parts per million, some of the highest levels found in any pollution site in the world.<ref>{{cite web|title=U.S. military report suggests cover-up over toxic pollution in Okinawa|url=http://www.japantimes.co.jp/community/2014/03/17/issues/u-s-military-report-suggests-cover-up-over-toxic-pollution-in-okinawa/|website=The Japan Times|access-date=2016-06-09| vauthors = Mitchell J |date=March 17, 2014}}</ref>