<unk>  refers to physicians who believe that exposure to certain chemical agents can result in physical damage, causing multiple chemical sensitivity and a variety of other disorders.<unk> sts often have a background in the field of allergy, not toxicology, and their theoretical approach is derived in part from classic concepts of allergic responses, first articulated by Theron Randolph, leading them to find cause-and-effect relationships or low-dose effects that are not generally accepted by toxicologists.  There has been much resistance in the medical community to accepting their claims.<unk> sts are certified by the American Academy of Environmental Medicine, which Theron Randolph founded in 1965 as the Society for<unk> . Theron G. Randolph published a number of books on<unk>  and Environmental Medicine.
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