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    • Risk and protective factors for childhood asthma: what Is the evidence? 

      Castro-Rodriguez, Jose A.; Forno, Erick; Rodríguez-Martínez, Carlos E.; Celedón, Juan Carlos
      To summarize the principal findings on risk and protective factors for childhood asthma, we retrieved systematic reviews on these topics in children (aged 1 to 18 years), up to January 2016, through MEDLINE, EMBASE, CINAHL, ...