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Since recent studies have reported no negative interactions with concurrent use , we here report three cases ( one case of a prolonged seizure , a serotonin syndrome and a focal seizure ) of severe lithium - induced side effects while patients underwent ECT without complications and lithium serum levels were still subtherapeutic .
 adverse effect: focal seizure, lithium; adverse effect: prolonged seizure, lithium; adverse effect: serotonin syndrome, lithium
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 adverse effect: focal seizure, lithium; adverse effect: prolonged seizure, lithium; adverse effect: serotonin syndrome, lithium