Neurofibromatosis type 1 occurs in 1 in 3,000 to 4,000 people worldwide.
How many people are affected by neurofibromatosis type 1 ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by neurofibromatosis type 1 ? [/INST] \n Neurofibromatosis type 1 occurs in 1 in 3,000 to 4,000 people worldwide.</s>