4325
Cis - retinoic acid ( RA ) may further increase the risk of developing BMTN .
 BMTN, Cis - retinoic acid; BMTN, RA
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:
 BMTN, Cis - retinoic acid; BMTN, RA