the purpose of this study of skeletal maturation of children with sex chromosome abnormalities ( 45 , x , 47 , xxx , 47 , xxy , x-chromosomal mosaics ) and controls is 2c-fold : ( 1 ) to investigate if children with sex chromosome aneuploidy ascertained in an unbiased fashion differ in skeletal maturation from their siblings and other normal healthy children born in denver , colorado , and ( 2 ) to assess if the skeletal age standards currently in use ( greulich-pyle ; tanner- whitehouse ) are applicable to denver children when evaluating radiographs for skeletal maturation .
C1160401
skeletal maturation
C0678723
maturation