TY - BOOK TI - First aid for the USMLE step 1 : a student-to-student guide SN - 0838526039 AV - R 834 .F57/ CY - Stamford, CT KW - National Board of Medical Examiners--Examinations--Study guides. Physicians--Licenses--United States--Study guides. Medicine--United States--Examinations--Study guides. ER -