The weekly print BMJ has a familiar rhythm, which those of you who start at the front and work steadily to the back may recognise.

At the front—indeed, most of the way through—we have lots of serious stuff. This week, for example, several articles consider the complexities of diagnosis. Wytze Laméris and colleagues studied 11 diagnostic imaging strategies for acute abdominal pain (doi:10.1136/bmj.b2431). Although computed tomography after radiography was the most sensitive investigation, they conclude that radiography followed by ultrasound, with computed tomography reserved for people with negative or inconclusive ultrasound results, is the best strategy, with good sensitivity and less exposure to radiation. …