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Large scale questionnaire survey on respiratory health in Sweden: Effects of late- and non-response
Erik P. Rönmark, Linda Ekerljung, Jan Lötvall, Kjell Torén, Eva Rönmark, Bo LundbäckVolume:
103
Year:
2009
Language:
english
DOI:
10.1016/j.rmed.2009.07.014
File:
PDF, 579 KB
english, 2009