Mary Lynn Mathre, RN, MSN, CARN has 40 years of experience as a registered nurse. Her nursing career began in the US Navy Nurse Corps for 4 years, followed by acute care medical-surgical nursing and specializing in addictions nursing in 1987. She received her Masters degree from Case Western Reserve University in 1985 and her masters thesis was on marijuana disclosure to health care professionals. Since that time Ms. Mathre has studied the medical use of cannabis. She is the co-founder and President of Patients Out of Time, an educational charity created in 1995 to educate health care professionals and the public about the therapeutic use of cannabis. She is the editor of Cannabis in Medical Practice: A Legal, Historical and Pharmacological Overview of the Therapeutic Use of Cannabis (1997) and co-editor of Women and Cannabis: Medicine, Science and Sociology (2002) and has written numerous papers and chapters on the topic. Ms. Mathre is also the President and Founding member of the American Cannabis Nurses Association. She works as an independent consultant on medical cannabis and addictions nursing; has authored several position papers on medical cannabis, testified at legislative hearings regarding medical cannabis and served as an expert witness on the topic.