Hernia

• Michael E. DeBakey VA Medical Center — Houston, Texas, United States

• Health Sciences Universyt — Istanbul, Turkey (Türkiye)

• Chugoku Area — Chugoku, Japan
• Chubu Area — Chūbu, Japan
• Hokkaido Area — Hokkaido, Japan
• Kansai Area — Kansai, Japan

• SKK — Encinitas, California, United States

• Beverly Hills Hernia Center — Beverly Hills, California, United States
• Vanderbilt University Medical Center — Nashville, California, United States
• Kaiser Foundation Research Institute — Oakland, California, United States
• Florida Hospital - Celebration Health — Celebration, Florida, United States

• Dartmouth Hitchcock Medical Center — Lebanon, New Hampshire, United States

• North Alabama Medical Center — Florence, Alabama, United States
• Helen Keller Hospital — Sheffield, Alabama, United States
• Lotus Clinical Research — Pasadena, California, United States
• Midwest Clinical Research — Dayton, Ohio, United States

Not specified

Not specified

• University of Jordan , faculty of medicine — Amman, Jordan