MERRF is a rare condition; its prevalence is unknown. MERRF is part of a group of conditions known as mitochondrial disorders, which affect an estimated 1 in 5,000 people worldwide.
How many people are affected by myoclonic epilepsy with ragged-red fibers ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by myoclonic epilepsy with ragged-red fibers ? [/INST] \n MERRF is a rare condition; its prevalence is unknown. MERRF is part of a group of conditions known as mitochondrial disorders, which affect an estimated 1 in 5,000 people worldwide.</s>