Useful Links
Links to SFST validation studies:
Florida:
http://www.drugdetection.net/NHTSA%20docs/Burns%20Florida%20Study.pdf
San Diego:
https://www.ncjrs.gov/pdffiles1/Photocopy/197439NCJRS.pdf
Colorado:
http://www.drugdetection.net/NHTSA%20docs/Burns%20Colorado%20Study.pdf