How does one become a certified aromatherapy practitioner?

Here in Atlanta, a 16-week Aromatherapy certification course is taught by Roz Zollinger, owner & founder of The Heal Center. Roz is a regional director for the National Association of Holistic Aromatherapy (NAHA) & Assistant Director of the US Branch of the the International Institute of Traditional Herbal Medicine and Aromatherapy (ITHMA). Check out the Heal Center’s website at: http://www.healcenteratlanta.com