In the 79 countries revised, two fundamental internal medicine (IM) training patterns were in evidence, first, only basic training needed, requiring a 3-4-year residency period for obtaining the diploma of internist; and advanced training needed, requiring 5-7 years of study. Second, evaluation of common IM training for sub-specialists revealed the following three patterns: dual training; core training and separate training.
Keywords: internal medicine; international; internist; sub-specialist; training.
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