Familial hemophagocytic lymphohistiocytosis occurs in approximately 1 in 50,000 individuals worldwide.
How many people are affected by familial hemophagocytic lymphohistiocytosis ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by familial hemophagocytic lymphohistiocytosis ? [/INST] \n Familial hemophagocytic lymphohistiocytosis occurs in approximately 1 in 50,000 individuals worldwide.</s>