The companion study guide, Novak's Gynecology: Self-Assessment and Review , has been updated for the 13th edition of the text. The guide's purpose is to facilitate careful review of the comprehensive information presented in the textbook. It allows the reader a gentle but effective means to focus on important topics. The study guide is aimed at improving patient care skills, not test taking. It will enhance the usefulness of Novak's Gynecology and encourage better understanding and applications of its principles.JAMA.