Excel on the boards and wards with Madruga and Marvels Medical Black Book: Guide to Differential Diagnosis, Mnemonics, and Clinical Pearls. * Solve the toughest cases with this authoritative, up-to-date, evidenced-based guide combined with keystone recommendations from clinical experts "black book" files.* Apply these easy-to-use, concise differentials and pearls for accurate and time-efficient diagnosis.