prevalence ->
Foreskin development before adolescence in 2149 schoolboys. (2006)
->TW date first, fourth, and seventh grade
->Fully retractable: 8, 21, and 58 percent,
->Partial phimosis with only the urethral meatus visible and none of the glans penis: 33, 25, and 7 percent
->Phimosis with nonvisualization of the meatus and glans: 17, 10, and 1 percent, respectively
->Circumcised: 3, 4, and 5 percent, respectively