In this post we offer the book First Aid For USMLE Step 1 in PDF form and hope students those are preparing for USMLE will find it helpful. Because the book offer a high quality content with more than 1300 must-known facts and mnemonics aimed to achieve every goals in USMLE examination.Written by students who excelled on the Step 1 exam and reviewed by top faculty for accuracy, this indispensable guide provides you with a blueprint of all the content …