This series is further added value for Surgery readers: it is free to subscribers!

'Physiology tutorials' is a series of tutorials on basic physiology on the Surgery website. They are two-page articles that test the reader on a contribution that was published in the paper version of Surgery. Only the information contained in the original article is used in the tutorial. Answers are uploaded on the website so the reader can see if he/she understands the concepts of physiology discussed.