3914
In 1970 , Louis Dubertret started his residency and discovered the importance of dermatological manifestations in internal medicine thanks to the professors Jean Hewitt and René Touraine .
 None
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:
 None