Validation and development of an immunonephelometric assay for the determination of alpha-1 antitrypsin levels in dried blood spots from patients with COPD
Laura Russo Zillmer, Rodrigo Russo, Beatriz Martins Manzano, Ivan Ivanaga, Oliver Augusto Nascimento, Altay Alves Lino de Souza, Gildo Santos Júnior, Francisco Rodriguez, Marc Miravitlles, José Roberto Jardim