Am. J. Epidemiol. -- Abstracts: Dolk et al. 145 (1): 1: "A small area study of cancer incidence in 1974-1986 was carried out to investigate an unconfirmed report of a 'cluster' of leukemias and lymphomas near the Sutton Coldfield television (TV) and frequency modulation (FM) radio transmitter in the West Midlands, England. The study used a national database of postcoded cancer registrations, and population and socioeconomic data from the 1981 census."

but the socio-ecomomic and class variations need to be taken into account too.