Impact of antibiotic resistance on outcomes of neutropenic cancer patients with Pseudomonas aeruginosa bacteraemia (IRONIC study) : Study protocol of a retrospective multicentre international study - Albasanz-Puig, Adaia (Spanish Network for Research in Infectious Diseases) ; Gudiol, Carlota (Spanish Network for Research in Infectious Diseases) ; Parody Porras, Rocío (Institut Català d'Oncologia) ; Tebe, Cristian (Institut d'Investigació Biomèdica de Bellvitge) ; Akova, Murat (Infectious Diseases Department. Hacettepe University School of Medicine) ; Araos, Rafael (Clínica Alemana Universidad del Desarrollo. Facultad de Medicina) ; Bote, Alex (Parc Taulí Hospital Universitari. Institut d'Investigació i Innovació Parc Taulí (I3PT)) ; Brunel, Anne-Sophie (Lausanne University Hospital) ; Calik, Sebnem (Department of Infectious Diseases and Clinical Microbiology. University of Health Science Izmir Bozyaka Training and Research Hospital) ; Drgona, Lubos (Oncohematology Department. Comenius University and National Cancer Institute) ; García, Estefanía (Hospital Universitario Reina Sofía (Còrdova, Espanya)) ; Hemmati, Philipp (Department of Haematology. Oncology and Palliative Care. Klinikum Ernst von Bergmann. Academic Teaching Hospital of Charite. University Medical School) ; Herrera, Fabián (Infectious Diseases Section. Department of Medicine. Centro de Educación Médica e Investigaciones Clínicas) ; Ibrahim, Karim Yaqub (Instituto Do Câncer Do Estado de São Paulo. Faculdade de Medicina da Universidade de São) ; Isler, Burcu (Department of Infectious Diseases and Clinical Microbiology. Istanbul Education and Research Hospital) ; Kanj, Souha (Infectious Diseases Division. American University of Beirut Medical Center) ; Kern, Winfried (Division of Infectious Diseases. Department of Medicine II. University of Freiburg. Medical Center and Faculty of Medicine) ; Maestro-de la Calle, Guillermo (Hospital Universitario 12 de Octubre (Madrid)) ; Manzur, Adriana (Infectious Diseases. Hospital Rawson) ; Marin, Jorge Iván (Critical Care and Clinical Microbiology Department. Universidad de Manizales) ; Márquez-Gómez, Ignacio (Hospital Regional Universitario de Málaga) ; Martín-Dávila, Pilar (Hospital Universitario Ramón y Cajal (Madrid)) ; Mikulska, Malgorzata (Division of Infectious Diseases. University of Genoa (DISSAL) and Ospedale Policlinico San Martino) ; Montejo, José Miguel (Hospital Universitario de Cruces (Barakaldo, País Basc)) ; Montero, María Milagro (Institut Hospital del Mar d'Investigacions Mèdiques) ; Morales, Hugo Manuel Paz (Infectious Diseases Department. Hospital Erasto Gaertner) ; Morales Fariña, Inmaculada (Hospital Universitario Virgen Macarena (Sevilla, Andalusia)) ; Novo, Andrés (Hospital Universitari Son Espases (Palma de Mallorca, Balears)) ; Oltolini, Chiara (IRCCS San Raffaele Scientific Institute (Milà, Itàlia). Unit of Infectious and Tropical Diseases) ; Peghin, Maddalena (Infectious Diseases Clinic. Department of Medicine. University of Udine and Azienda Sanitaria Universitaria Integrata) ; Del Pozo, Jose Luis (Clínica Universidad de Navarra) ; Puerta-Alcalde, Pedro (Hospital Clínic i Provincial de Barcelona) ; Ruiz-Camps, Isabel (Hospital Universitari Vall d'Hebron) ; Sipahi, Oguz Resat (Faculty of Medicine. Ege University) ; Tilley, Robert (University Hospitals Plymouth NHS Trust (Regne Unit)) ; Yáñez, Lucrecia (Hospital Universitario Marqués de Valdecilla (Santander, Cantabria)) ; Gomes, Marisa Z. R (Hospital Federal Servidores Do Estado. Ministerio da Saúde) ; Carratalà, Jordi (Spanish Network for Research in Infectious Diseases) ; Universitat Autònoma de Barcelona