Tietz syndrome is a rare disorder; its exact prevalence is unknown. Only a few affected families have been described in the medical literature.
How many people are affected by Tietz syndrome ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by Tietz syndrome ? [/INST] \n Tietz syndrome is a rare disorder; its exact prevalence is unknown. Only a few affected families have been described in the medical literature.</s>