2634
One child , recently fed , vomited a small amount of breast milk after a short period of crying and apparently had a laryngospasm , shown by a sudden drop in the PtcO2 level without any other signs of discomfort .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None