Levy, D. E., Thorndike, A. N., Biener, L., & Rigotti, N. A. (2007). Use of nicotine replacement therapy to reduce or delay smoking but not to quit: Prevalence and association with subsequent cessation efforts. BMJ Group.

Levy, Douglas E., Anne N. Thorndike, Lois Biener, و Nancy A. Rigotti. Use of Nicotine Replacement Therapy to Reduce or Delay Smoking but Not to Quit: Prevalence and Association With Subsequent Cessation Efforts. BMJ Group, 2007.

Levy, Douglas E., Anne N. Thorndike, Lois Biener, و Nancy A. Rigotti. Use of Nicotine Replacement Therapy to Reduce or Delay Smoking but Not to Quit: Prevalence and Association With Subsequent Cessation Efforts. BMJ Group, 2007.