5015
Three patients with niacin - induced visual symptoms had cystoid maculopathy without leakage on fluorescein angiography , and a fourth patient with no fundus abnormality experienced cessation of visual symptoms upon discontinuation of niacin .
 cystoid maculopathy, niacin; visual symptoms, niacin; visual symptoms, niacin
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 cystoid maculopathy, niacin; visual symptoms, niacin; visual symptoms, niacin