1442
This case demonstrates an occupational activity ( construction ) that has now become the dominant source of lead exposure for U.S. adults , the importance of a good occupational history to suspecting and making a diagnosis , the possible outcomes of chronic lead toxicity , and the importance of preventing further exposure and using proper methods to treat acute toxicity .
 lead toxicity, lead
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:
 lead toxicity, lead