The PreTest "RM" Clinical Science Series offers an unrivaled study regimen for course work or examination preparation. Each title contains 500 multiple-choice questions which parallel the format and degree of difficulty found on licensing exams. Detailed answers are provided along with references to the recent literature and a bibliography. When used in concert with the appropriate PreTest "RM" simulated exam, these titles provide an authoritative review for USMLE Step 2 and Step 3.