The GABRIEL Advanced Surveys: study design, participation and evaluation of bias.


Exposure to farming environments has been shown to protect substantially against asthma and atopic disease across Europe and in other parts of the world. The GABRIEL Advanced Surveys (GABRIELA) were conducted to determine factors in farming environments which are fundamental to protecting against asthma and atopic disease. The GABRIEL Advanced Surveys have… (More)
DOI: 10.1111/j.1365-3016.2011.01223.x


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