O’Shea, O. K., Green, H. J., Philpott, H. L., & Newland, N. (2022). An exploratory, randomised, crossover study to investigate the effect of a nicotine containing electronic cigarette on appetite in healthy adult smokers, after a period of smoking abstinence: study protocol. International Journal of Clinical Trials, 9(4), 314–320. https://doi.org/10.18203/2349-3259.ijct20222692