Acute Appendicitis

• Phoenix Children's Hosptial — Phoenix, Arizona, United States
• Arkansas Children's Hospital — Little Rock, Arkansas, United States
• UC Davis — Sacramento, California, United States
• Children's National Medical Center — Washington D.C., District of Columbia, United States

• Pamela Youde Nethersole Eastern Hospital — Hong Kong, China

Not specified

• Herning Hospital — Herning, Denmark

• Gachon Univ., Gil Medical Center — Incheon, South Korea

• Faculty Hospital Bulovka — Prague, Czechia

Not specified

• Maggiore Bellaria Hospital — Bologna, Italy

• Western Galilee Hospital — Nahariya, Israel

• Health Sciences University, Van Education and Research Hospital — Van, Turkey (Türkiye)