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A study protocol to evaluate the relationship between outdoor air pollution and pregnancy outcomes

Manuel C Ribeiro*, Maria J Pereira, Amílcar Soares, Cristina Branquinho, Sofia Augusto, Esteve Llop, Susana Fonseca, Joaquim G Nave, António B Tavares, Carlos M Dias, Ana Silva, Ismael Selemane, Joaquin de Toro, Mário J Santos and Fernanda Santos

BMC Public Health 2010, 10:613  doi:10.1186/1471-2458-10-613

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