23906
For those reasons , DMT was known as the " business trip " during the 1960 s in the United States , as a user could access the full depth of a psychedelic experience in considerably less time than with other substances such as LSD or magic mushrooms .
 United States
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 United States