465
Seventy - three percent ( 73 / 99 ) of the study participants were treated for headache and 70 % ( 70 / 99 ) for nausea .
 headache, nausea
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 headache, nausea