A truly pocket-sized guide for preparing for and being on call, this book is ideal for use in the busy clinical setting. Convenient and portable, it puts everything students or junior physicians need at their fingertips. With clear, simple, and reproducible explanatory line diagrams that enhance the text, it answers the questions that students are often too scared or embarrassed to ask. With this book in their pockets, medical students and junior doctors will be equipped to tackle being on call appropriately and with confidence.