1. hypothesis and in animal research to per- nonindustrial populations e.g. young
2. mit further elucidation of underlying mech- adults (61 64 65) and active community
3. anisms. The public health implications of elderly (62 63) as well as by 30% of office
4. chemical intolerance or chemical sensitivity workers (67) and of a rural community
5. are potentially extensive. A problem such as based population (66) merits systematic