4245
Among 547 preterm infants of < or = 34 weeks gestation born between 1987 and 1991 , 8 children ( 1 . 46 % ) developed severe progressive and bilateral sensorineural hearing loss .
 sensorineural hearing loss
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 sensorineural hearing loss