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Title: Save some money, buy previous editions!
Review: I compared page for page 2006 and 2004 editions of Kaplan Medical USMLE Step 1 Qbook and was really surprised: Kaplan didn't change a single word in QBook over past 4 years. Well, I have to be completely honest: they changed 2004 for 2006 in most instances. I owned both and regret I bought latest edition myself. There were only few minute changes since 2002 and none of them affected answers (few question stems were re-written in 2004). So, if you're really want to waste your money, buy latest edition of Kaplan books.
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