TNF promoter polymorphisms are associated with genetic susceptibility in COPD secondary to tobacco smoking and biomass burning
Juan Manuel Reséndiz-Hernández,1 Enrique Ambrocio-Ortiz,1 Gloria Pérez-Rubio,1 Luis Alberto López-Flores,1 Edgar Abarca-Rojano,2 Gandhi Fernando Pavón-Romero,3 Fernando Flores-Trujillo,4 Rafael de Jesús Hernández-Zenteno,4 Ángel Camarena,1 Martha Pérez-Rodríguez,5 Ana Marí