Gastroenterology and urology in Singapore.
D005767:Gastrointestinal Diseases / Q000601:surgery*; D005770:Gastrointestinal Neoplasms / Q000601:surgery; D006801:Humans; D012846:Singapore; D014570:Urologic Diseases / Q000601:surgery*; D014571:Urologic Neoplasms / Q000601:surgery