In 2002, a Taiwanese study examined men born to mothers who were exposed to polychlorinated biphenyls (PCBs, coolants banned in the U.S. in 1979).

• 在2002，一个台湾人调查了曾接触聚氯联苯（PCBs，美国1979年禁止的冷冻剂）母亲生出的儿子。