Figure 2

Case enrollment flowchart. Each cohort was followed until the end of 2014. The 2003 cohort had up to 11 years of follow-up, whereas the 2007 cohort had only seven years of follow-up.
Case enrollment flowchart. Each cohort was followed until the end of 2014. The 2003 cohort had up to 11 years of follow-up, whereas the 2007 cohort had only seven years of follow-up.