J Chromatogr B Analyt Technol Biomed Life Sci 2018 Aug 13;1092:328-331. Epub 2018 Jun 13.
Clinical Microbiology and Infectious Diseases Department, Hospital General Universitario Gregorio Marañón, Doctor Esquerdo 46, 28007 Madrid, Spain; Instituto de Investigación Sanitaria, Hospital Gregorio Marañón, Doctor Esquerdo 46, 28007 Madrid, Spain; Department of Medicine, School of Medicine, Universidad Complutense de Madrid, Avda. Complutense s/n, 28040 Madrid, Spain; CIBER Enfermedades Respiratorias-CIBERES (CB06/06/0058), Doctor Esquerdo 46, 28007 Madrid, Spain.