We posted a rhythm strip of complete heart block  today ( accidentally posted upside down) that was given to us years ago by a friend who was a decile of the late and great Dr. Marriott. Our friend and colleague, Jason Roediger, who has a photographic memory for ECGs, recognized it as having been published by Dr. Marriott. At the ECG Guru, all of our content is copyright-free, and we would never intentionally publish a previously- published ECG. In fact, most of the ECGs on this site come from Dawn's and Jason's own practice, or are donated by friends from their own experiences. inconvenienced or any inconvenience.