2021, Spa therapy interventions for post respiratory rehabilitation in COVID-19 subjects: does the review of recent evidence suggest a role.

Maccarone MC, Masiero St.

Environ  Sci  Pollut  Res  Int 2021;17:1-4. Doi: 10.1007/s11356-021-15443-8

https://pubmed.ncbi.nlm.nih.gov/34273080/