Study Updates

Here you can find important study updates. 

  • Total enrollment:  5,956
  • Total number of sites: 136

Enrollment is officially closed as of November 2013 and observational follow-up (i.e. questionnaire-based) remains ongoing. Participants are asked to reply a to brief health questionnaire from the Clinical Coordinating Center at Brigham and Women's Hospital in Boston, Massachusetts every 6 months.