Dear Dr. Epstein & Staff,
Please accept this small token of my appreciation, as I can't thank you enough for the excellent care that I received.
Somehow you have managed a most difficult task. You have all mastered the art of kindness and courtesy, all the while maintaining the utmost manner of professionalism. Yet, you do this in such a warm and nurturing environment. Kudos to you all!
With my sincere gratitude, I thank you again.