3539
After ruling out a hydrotelluric source of fluorine , the patient 's fluorosis was linked to chronic use of niflumic acid , following the publication in 1978 of the 2 previously reported cases affected by this drug .
 fluorosis, niflumic acid
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:
 fluorosis, niflumic acid