Charles, G K, Braunstein, S P, Barker, J L, Fung, H, Coome, L, Kumar, R, Huang, V S, Kemp, H, Grant, E, Bernard, D, Barefoot, D & Sgaier, S K 2023, ' How do psychobehavioural variables shed light on heterogeneity in COVID-19 vaccine acceptance? Evidence from United States general population surveys on a probability panel and social media ', BMJ Open, vol. 13, no. 6, e066897 . https://doi.org/10.1136/bmjopen-2022-066897