TY  - BOOK
AU  - Kenneth Ibsen  
AU  - Nandan Bhatt
TI  - Review for USMLE: United states medical licensing examination step, step 2 CK 
SN  - 0781765226
PY  - 2007///
CY  - Philadelphia.
PB  - Lippincott williams and wilkins.
KW  - Medicine
KW  - examinations, questions
ER  -