Always study with the most up-to-date prep! Look for USMLE Step 1 Lecture Notes 2020: 7-Book Setâ, ISBN 978-1-5062-5494-4, on sale December 3, 2019. Publisher's Note: Products purchased from third-party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitles included with the product. About the Author: For over 40 years, Kaplan Medical has been dedicated to helping aspiring doctors prepare for and pass their medical licensing exams. We are proud to offer the most innovative study tools available on the market and our dedicated staff of expert advisors and faculty ensures that doctors and medical students receive the guidance and support they need. At Kaplan Medical, our students' success is our goal.