The Science of Variation Group is a collaborative effort to improve the study of variation in interpretation and classification of injuries. Through this website we are able to study observer variation among a large number of fully trained, practicing and experienced surgeons. All participation is voluntary and recognized by Acknowledgement.  Authorship of publications is decided prior to initiation of the study and is based on involvement in study design, set-up, execution, data analysis, and writing of the paper.  Interested surgeons from any part of the world are encouraged to join and to bring their ideas to the group.  If you know a colleague that might like to join the Science of Variation Group, please forward this message or send them to the link to join!