1. Department of Anaesthesiology, Critical Care and Pain Medicine Miguel Servet University Hospital Zaragoza Spain
2. Aragon Institute for Health Research Zaragoza Spain
3. Morphological Madrid Research Center Ultradissection Spain EchoTraining School Madrid Spain
4. Department of Orthopaedic and Trauma Surgery Miguel Servet University Hospital Zaragoza Spain
5. Department of Pneumology Miguel Servet University Hospital Zaragoza Spain