Which is easier for beginners: supine or prone position percutaneous nephrolithotomy? Assessment of the learning curve in novice urologists through a randomized clinical trial.

Background: Percutaneous nephrolithotomy (PCNL) could be performed in both prone and supine positions. Each position has its own advantages and disadvantages. "Learning curve" is a graph that represents progress of a skill against the time needed to master the technique.

Assessing evidence in translational chronobiology: The cases of Daylight Saving Time and road safety, and of school start times and sleep duration.

One of the main challenges in translating chronobiology research into clinical practice is represented by differences in how basic scientists and clinicians evaluate evidence. The workshop "Assessing Evidence in Translational Chronobiology," which was held at the University of Surrey in June 2023, addressed this issue by bringing together basic scientists and clinicians to evaluate evidence on two specific topics: the impact of Daylight Saving Time (DST) on road traffic accidents and the relationship between delayed school start times (SSTs) and sleep duration in high school students. A comprehensive literature search was conducted for discussions during the workshop, which is presented in this review.