Regional variations in the use of common surgical procedures: within and between England and Wales, Canada and the United States of America.
D000367:Age Factors; D002170:Canada; D004739:England; D005260:Female; D013502:General Surgery; D006297:Health Services Accessibility; D006801:Humans; D008297:Male; D012737:Sex Factors; D013514:Surgical Procedures, Operative / Q000706:statistics & numerical data*; D014481:United States; D014852:Wales; D000078329:Workforce