In the mid-20th century, Zalmanov baths were widely used throughout Europe. They were officially recognized by the French Ministry of Health and demonstrated high efficacy in Parisian hospitals.
In France, they were approved by the Ministry of Health under the following registration numbers: G.H.D. 16,889 dated June 24, 1952, and C.V. 23,008 dated July 28, 1952.
Statistical data were obtained based on clinical results obtained during the therapy with Zalmanov baths in hospitals in Saint Petersburg and Paris