Hi John, the medium help file webpage is a much needed link. I also worked through these and wrote a cheat sheet which you may want to download, and/or print. Here is the link:
Associate Professor of Epidemiology and Environmental Health at the University of Canterbury, New Zealand. Also in: https://refind.com/arinbasu
Associate Professor of Epidemiology and Environmental Health at the University of Canterbury, New Zealand. Also in: https://refind.com/arinbasu
