Die Kur - Kraft für Körper, Seele und den Alltag

2020, Overview of systematic reviews with meta analysis based on randomized controlled trials of balneotherapy and spa therapy from 2000 to 2019.

Kamioka H, Nobuoka S, Iiyama J.

Int J Gen Med. 2020; 13: 429-444. Doi: 10.2147/IJGM.S261820.

(PMC free article)

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7383020/