20270
Equal amounts of breast milk ( 20ml ) and food rations ( 40kg ) obtained from 50 volunteer lactating mothers and eighty - two frequently consumed food commodities in the preceding month were used for the study .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None