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Avan, BI; Raza, SA; Kirkwood, BR; (2014) A community-based study of early childhood sensory stimulation in home environment associated with growth and psychomotor development in Pakistan. International journal of public health, 59 (5). 779-88. doi: 10.1007/s00038-013-0525-7. Epub 2013 Nov 9.. ISSN 1661-8556 https://researchonline.lshtm.ac.uk/id/eprint/3172389 Full text not available from this repository.

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Cooper, PJ; Chico, ME; Vaca, MG; Rodriguez, A; Alcantara-Neves, NM; Genser, B; de Carvalho, LP; Stein, RT; Cruz, AA; Rodrigues, LC; +1 more... Barreto, ML; (2006) 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). BMC pulmonary medicine, 6. p. 24. ISSN 1471-2466 DOI: https://doi.org/10.1186/1471-2466-6-24