Brooke-Spiegler syndrome is a rare disorder; its prevalence is unknown.
How many people are affected by Brooke-Spiegler syndrome ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by Brooke-Spiegler syndrome ? [/INST] \n Brooke-Spiegler syndrome is a rare disorder; its prevalence is unknown.</s>