1,474
Participants
Start Date
October 31, 1999
Primary Completion Date
September 30, 2020
Study Completion Date
September 30, 2020
Completion questionnaires/providing biological samples
Participant completes baseline interview at enrollment, then completes online questionnaire on lifestyle and medical history. Diet questionnaire is completed at home and mailed back. Online questionnaire about personal care product use and medications is completed at each scheduled study visit.
Harvard School of Public Health, Boston
Massachusetts General Hospital
OTHER
National Institute of Environmental Health Sciences (NIEHS)
NIH