Risk factors and immunological pathways for asthma and other allergic diseases in children: background and methodology of a longitudinal study in a large urban center in Northeastern Brazil (Salvador-SCAALA study)

Maurício L. Barreto1, Sérgio Souza da Cunha1, Neuza Maria Alcantara-Neves2, Lidiane dos Santos Carvalho3, Álvaro Augusto Cruz4, Renato T. Stein5, Bernd Genser1, Philip J. Cooper6, Laura C. Rodrigues7
1Instituto de Saúde Coletiva, Universiade Federal de Bahia, Salvador, Brazil
2Instituto de Ciências da Saúde, Universidade Federal de Bahia, Salvador, Brazil
3Centro de Pesquisas Gonçalo Moniz, FIOCRUZ, Salvador, Brazil
4Centro de Enfermidades Respiratórias, Faculdade de Medicina, Universidade Federal de Bahia, Salvador, Brazil
5Department of Pediatrics, School of Medicine, Pontifica Universidade Católica, Porto Alegre, Brazil
6Instituto de Microbiologia, Universidad San Francisco de Quito, Quito, Ecuador
7Department of Epidemiology and Populations health, London School of Hygiene and Tropical Medicine, London, UK

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