2050
Serum insulin - like growth factor I ( IGF - I ) SD score increased from - 2 . 2 and - 4 . 2 in men and women , respectively , to 1 . 8 and - 0 . 9 at 6 months and 0 . 8 and - 0 . 7 at 12 months .
 GENE: Serum insulin - like growth factor I; GENE: IGF - I
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: Serum insulin - like growth factor I; GENE: IGF - I