Effects of Prosocial and Hope-Promoting Communication Strategies on COVID-19 Worry and Intentions for Risk-Reducing Behaviors and Vaccination: Experimental Study. Scharnetzki E, Waterston L, Scherer AM, Thorpe A, Fagerlin A, Han PKJ. JMIR Form Res. 2023 Aug 1;7:e41959. doi: 10.2196/41959. PMID: 37379364 Free PMC article.