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The Renal Support Network ( RSN ) is an American nonprofit , kidney patient-focused , kidney patient-run organization that works to benefit individuals affected by chronic kidney disease ( CKD ) .
 Renal Support Network
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Renal Support Network