Aortic stenosis gradient Johnson Francis | April 19, 2015 | | No Comments Doppler tracing showing aortic stenosis and regurgitation About The Author Johnson Francis Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal Add a CommentYour email address will not be published. Required fields are marked *Comment:*Name:* Email Address:* Website: Save my name, email, and website in this browser for the next time I comment.