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Huijghebaert S, Vanham G, Van Winckel M, Allegaert K. Reply to Davison, G. Comment on “Huijghebaert et al. Does Trypsin Oral Spray (Viruprotect^®/ColdZyme^®) Protect against COVID-19 and Common Colds or Induce Mutation? Caveats in Medical Device Regulations in the European Union. Int. J. Environ. Res. Public Health 2021, 18, 5066”. International Journal of Environmental Research and Public Health. 2023; 20(1):631. https://doi.org/10.3390/ijerph20010631

Huijghebaert, Suzy, Guido Vanham, Myriam Van Winckel, and Karel Allegaert. 2023. "Reply to Davison, G. Comment on “Huijghebaert et al. Does Trypsin Oral Spray (Viruprotect^®/ColdZyme^®) Protect against COVID-19 and Common Colds or Induce Mutation? Caveats in Medical Device Regulations in the European Union. Int. J. Environ. Res. Public Health 2021, 18, 5066”" International Journal of Environmental Research and Public Health 20, no. 1: 631. https://doi.org/10.3390/ijerph20010631

Huijghebaert, S., Vanham, G., Van Winckel, M., & Allegaert, K. (2023). Reply to Davison, G. Comment on “Huijghebaert et al. Does Trypsin Oral Spray (Viruprotect^®/ColdZyme^®) Protect against COVID-19 and Common Colds or Induce Mutation? Caveats in Medical Device Regulations in the European Union. Int. J. Environ. Res. Public Health 2021, 18, 5066”. International Journal of Environmental Research and Public Health, 20(1), 631. https://doi.org/10.3390/ijerph20010631