Dear Dr Vasa,
I trust this email finds you well.
You have been highly recommended to me by one of your more recent patients, a little girl whose name I believe is Carmen (I may be incorrect, as I lost all their contact details when my purse was stolen recently). She is from Durban, South Africa, and recently spent 24 days in intensive therapy with you in India. She has made an amazing recovery under your guidance and according to her mum, is now performing exceptionally at school, even though doctors said she would not walk or talk again after her stroke.