Pluym, N., T. Burkhardt, and M. Scherer. “Exploring the Cessation Efficacy and Harm Reduction Potential of Heated Tobacco and Nicotine Pouch Products in Smokers and Smokeless Tobacco Users: Study Protocol of a 6-Month Randomized Controlled Switching Trial”. International Journal of Clinical Trials, vol. 11, no. 2, Apr. 2024, pp. 132-9, doi:10.18203/2349-3259.ijct20240964.