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Bu kavram başka kaynaklarda da geçiyor

• Stedman's Medical Dictionary: A Practical Medical Dictionary (1920)
• A Dictionary of Military Terms (1918)
• The American Dictionary and Cyclopedia (1910)
• The Nurse's Dictionary of Medical Terms and Nursing Treatment (1909)
• An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
• Explanation of Terms Used in Entomology (1906)
• The Student's Medical Dictionary (1896)