An engaging, informative, and endlessly surprising graphic history of medicine   In the Middle Ages, surgery was performed by barbers due to their skill with sharp instruments. In the mid-19th century, a “grand exhibition” of the effects of laughing gas inadvertently led to the discovery of anesthesia. Three decades later, Louis Pasteur enjoyed a crucial breakthrough in his search for vaccinations because his assistant decided, against his orders, to take a vacation.  Here, c