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Non-responders to a postal questionnaire on respiratory symptoms and diseases.

E. RONMARK ; B. LUNDBACK ; A. LUNDQVIST ; L. NYSTROM ; Respiratory Epidemiology Unit. Department of Occupational Health. National Institute for Working Life. Umea. SWE ; The Olin-study group. Department of Medicine. Central Hospital of Norrbotten. Lulea Boden. SWE |

Dans European journal of epidemiology (vol. 15, n° 3, 1999)

[BDSP. Notice produite par INIST EFlDR0xG. Diffusion soumise à autorisation]. Only few data have been published about non-responders in epidemiological studies on respiratory diseases. The aim of this study was to examine the characteristics of [...]

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