First aid for the USMLE step 2 : a student to student guide / Tao Le ... [et al.]. 4th ed. New York, N.Y. : McGraw-Hill, Medical Publ. Division, c2003. xvi, 520, 16, 521-614 s. ISBN 0-07-140930-0. 978-0-071-40930-8ISSN 1532-320X   [1, z toho voľných 1]