Evaluating the efficacy and safety of a novel prophylactic nasal spray in the prevention of SARS-CoV-2 infection: A multi-centre, double blind, placebo-controlled, randomised trial.
Balmforth et al., Journal of Clinical Virology, doi:10.1016/j.jcv.2022.105248
https://c19early.org/balmforthxy.html