Enhancing the efficacy of a smoking quit line in the military: Study rationale, design and methods of the Freedom quit line.
Little MA, Ebbert JO, Bursac Z, Talcott GW, Talley L, LeRoy KM, Womack CR, Hryshko-Mullen AS, Klesges RC. Enhancing the efficacy of a smoking quit line in the military: Study rationale, design and methods of the Freedom quit line. Contemp Clin Trials. 2017 08; 59:51-56.