190480
The son of a pharmacist , Rivkin comes from a medical family that includes a general practitioner , a thoracic surgeon , an ob-gyn , a radiologist , and an infertility specialist .
 Rivkin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rivkin