Original article
Asthma prevalence and risk factors in early childhood at Northern Portugal
P.T.B.S. Brancoa, R.A.O. Nunesa, M.C.M. Alvim-Ferraza, F.G. Martinsa, C. Ferrazb, L.G. Vazb, S.I.V. Sousaa,
Corresponding author
a LEPABE – Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
b Departamento de Pediatria (UAG-MC), Centro Hospitalar de São João, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
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