Public Health Reports
Public Health Reports > 2002 > 117 > 2 > 114-122
Public Health Reports > 2002 > 117 > 2 > 123-130
Public Health Reports > 2002 > 117 > 2 > 131-136
Public Health Reports > 2002 > 117 > 2 > 99-113
Public Health Reports > 2002 > 117 > 3 > 218-230