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Hydroxyurea associated with concomitant occurrence of diffuse longitudinal melanonychia and multiple squamous cell carcinomas in an elderly subject .
 diffuse longitudinal melanonychia, Hydroxyurea; multiple squamous cell carcinomas, Hydroxyurea
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:
 diffuse longitudinal melanonychia, Hydroxyurea; multiple squamous cell carcinomas, Hydroxyurea