2422
With a sample of mothers of healthy infants , all three subscales of the revised instrument , WPL - R , had acceptable levels of internal consistency at 7 , 30 , and 90 days postpartum , and stability across administrations .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 None