Risk factors for asthma and allergy associated with urban migration: background and methodology of a cross-sectional study in Afro-Ecuadorian school children in Northeastern Ecuador (Esmeraldas-SCAALA Study).
Cooper, Philip John; Chico, Martha E; Martinez, Gioconda Maritza Vaca; Rodriguez, Alejandro; Neves, Neuza Maria Alcântara; Genser, Bernd; Pontes-de-Carvalho, Lain Carlos; Stein, Renato Tetelbom; Cruz Filho, Alvaro Augusto Souza da; Rodrigues, Laura Cunha; Barreto, Maurício Lima (BioMed Central, 2014)
