title: Mendelian susceptibility to mycobacterial infection should be ruled out in Mycobacterium chelonae empyema.
authors.affiliation: Immunodeficiencies Unit, Hospital 12 Octubre, Carretera Andalucia km 5,400, Madrid, Spain. nachgonzalez@gmail.com
authors.forename: Luis Ignacio
authors.initials: LI
authors.lastname: González-Granado