In research reported in Occupational and Environmental Medicine, Freedman and his team studied deaths from breast, ovarian, colon, prostate and skin cancers in 24 U.S. states between 1984 and 1995 to determine the impact of sunlight on the diseases.

• 在发表于《职业和环境医学》上的一项研究中,弗里德曼和他的小组调查了从1984年到1995年美国24个州乳腺癌、卵巢癌、结肠癌、前列腺癌和皮肤癌的死亡率,以研究阳光对疾病的作用。