The prevalence of HFTC is unknown, but it is thought to be a rare condition. It occurs most often in Middle Eastern and African populations.
How many people are affected by hyperphosphatemic familial tumoral calcinosis ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by hyperphosphatemic familial tumoral calcinosis ? [/INST] \n The prevalence of HFTC is unknown, but it is thought to be a rare condition. It occurs most often in Middle Eastern and African populations.</s>