11265
We searched seven electronic databases , grey literature sources , and references and citations of included material for experimental studies written in English investigating the effects of commercial food advertising on the food - related behaviours , attitudes and beliefs of adults aged 16 years and over .
 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