A simplified method for the analysis of urinary cotinine by GC-MS by Luiz Carlos da Cunha, Fernando Gomes Ferreira Oliveira, Luciano da Ressurreição dos Santos, Liuba Laxor Pucci, Jerônimo Raimundo de Oliveira Neto, Rosemar Macedo Sousa Rahal, Ruffo de Freitas Júnior

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