Thank you for helping patients become informed partners in their health!
Canadian Public Health Association: 
Plain Language Service
Centre for Literacy: Plain Language Links
Clear Language and Design (CLAD): Measuring Readability
CLAD Thesaurus (provides alternatives to complicated words and phrases)
University of Michigan: Plain Language Medical Dictionary
Harvard School of Public Health: Health literacy
Northwest Territories Literacy Council: Plain Language (includes audit tool)
Plain Language Association International: Plain Language
University of Minnesota - Bio-Medical Library: Resources for Creating Patient Education Materials