Centronuclear myopathy is a rare condition; its exact prevalence is unknown.
How many people are affected by centronuclear myopathy ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by centronuclear myopathy ? [/INST] \n Centronuclear myopathy is a rare condition; its exact prevalence is unknown.</s>