The effect of hydrotherapy on the incidence of common cold episodes in children: a randomised clinical trial.
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Grüber C, Riesberg A, Mansmann U, Knipschild P, Wahn U, Bühring M.
Eur J Pediatr. 2003 Mar;162(3):168-76. Epub 2003 Jan 21.
PMID: 12655421