6735
He took his pharmacy examination in 1817 , but had an interest in medicine and joined the Karolinska Institute in 1820 .
 organization: Karolinska Institute
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Karolinska Institute