✦ USMLE Step 1 · 2 CK · 3

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75 days to Step 1
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Endocrine58%
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Item 1 of 10

A 13-year-old girl is brought to the clinic for a yearly physical examination…

A. 5 alpha-reductase
B. 11 beta-hydroxylase
C. 17 alpha-hydroxylase
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