Regional Anesthesia Block

• ASST Papa Giovanni XXIII — Bergamo, Italy
• Spedali Civili di Brescia — Brescia, Italy
• Irccs Humanitas Research Hospital — Rozzano, Milan, Italy
• Azienda Ospedale-Università Padova — Padova, Italy

• Ain Shams University Hospitals — Cairo, Egypt

• University Hospital of Padua — Padova, Italy

• Policlinica Universitária Piquet Carneiro — Rio de Janeiro, Brazil

Not specified

• Ankara Etlik City Hospital — Ankara, Turkey (Türkiye)

• Ngoerah Hospital — Denpasar, Bali, Indonesia

• Istanbul University-Cerrahpasa, Cerrahpasa Medicine of Faculty — Bakırköy, Istanbul, Turkey (Türkiye)

• Duke University Medical Center — Durham, North Carolina, United States

• Al-Zahraa University Hospital — Cairo, Alexandria Governorate, Egypt