Chemical Characterization and Source Apportionment of Household Fine Particulate Matter in Rural, Peri-urban, and Urban West Africa - Zhou, Z; Dionisio, KL; Verissimo, TG; Kerr, AS; Coull, B; Howie, S; Arku, RE; Koutrakis, P; Spengler, JD; Fornace, K; Hughes, AF; Vallarino, J; et al. (ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2014)