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We have analyzed the 27 exons and the promoter region of the RB1 gene in familial or sporadic bilateral retinoblastoma by using single - strand conformation polymorphism analysis .
 Disease: familial or sporadic bilateral retinoblastoma
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 Disease: familial or sporadic bilateral retinoblastoma