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Fee splitting is the practice of sharing fees with professional colleagues , such as physicians or lawyers , in return for being sent referrals Fee splitting in medicine and healthcare This is essentially the payment of a commission to the referrer with the express intention of ensuring that the referring doctor directs referrals of patients to the payee .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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