1985, Effect of water immersion on renal natriuretic peptide (urodilatin) excretion in humans 31. März 2020 Norsk P, Drummer C, Johansen LB, Gerzer R J Appl Physiol (1985). 1993 Jun;74(6):2881-5 https://www.ncbi.nlm.nih.gov/pubmed/8396110