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Schmidt-Nielsen K, Crawford EC, Hammel HT.Schmidt-Nielsen K, et al.Proc R Soc Lond B Biol Sci. 1981 Mar 11;211(1184):291-303. doi: 10.1098/rspb.1981.0008.Proc R Soc Lond B Biol Sci. 1981.PMID: 6111801