1. Master Advanced Medical Competences in Regional Anesthesia Based on AnatomyFaculty of Medicine, Universitat of Barcelona Barcelona Spain
2. Department of Anatomy and Human Embriology, Faculty of MedicineUniversitat of Barcelona Barcelona Spain
3. Department of AnesthesiologyHospital Clínic, Universitat de Barcelona Barcelona Spain
4. CEU San Pablo University School of Medicine Madrid Spain
5. Department of AnesthesiologyMadrid‐Montepríncipe University Hospital Madrid Spain