McClelland, V Several factors were not considered in study of increase in hay fever and eczema. [electronic resource] - BMJ (Clinical research ed.) Feb 1998 - 707 p. digital Publication Type: Letter; Comment ISSN: 0959-8138 Standard No.: 10.1136/bmj.316.7132.707a doi Subjects--Topical Terms: AdolescentAwarenessCohort StudiesEczema--epidemiologyHumansPrevalenceRhinitis, Allergic, Seasonal--epidemiologyUnited Kingdom--epidemiology