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