44954
The currently recognized features of HHS are cerebellar hypoplasia , immunodeficiency , progressive bone marrow failure , and intrauterine growth restriction .
 cerebellar hypoplasia, immunodeficiency, bone marrow failure, intrauterine growth restriction
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
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Text: {0} 
Answer:
 cerebellar hypoplasia, immunodeficiency, bone marrow failure, intrauterine growth restriction