2006
Infants are particularly susceptible to chronic nitrate - induced methemoglobinemia because of their low stomach acid production , large numbers of nitrite - reducing bacteria , and the relatively easy oxidation of fetal hemoglobin .
 methemoglobinemia, nitrate
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:
 methemoglobinemia, nitrate