A client asked me, this morning, to remind him of the wording:

Dear Mr. Barrow,
Now that we have reached the end of your current course of treatment, I wanted to take this opportunity to thank you for placing your trust and confidence in myself and the team here at Aardvark Dental.
We are delighted with the result achieved clinically and hope you are equally delighted with the outcome.
If there are any problems don’t hesistate to call us on 0123-456789.
At this time we normally remind our patients that the practice grows primarily through word of mouth recommendation.
Please find enclosed 3 copies of our business referral card.
If you know of any family, friends or colleagues who would benefit from a visit to a practice like ours, please pass the cards to them.
Thanks for your help.