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Clark PS, Feltz ET, List-Young B, Ritter DG, Noble GR.Clark PS, et al. Among authors: ritter dg.JAMA. 1970 Oct 19;214(3):507-12.JAMA. 1970.PMID: 5469025No abstract available.
Feltz ET, Ritter DG.Feltz ET, et al. Among authors: ritter dg.Cryobiology. 1970 Sep-Oct;7(2):154-6. doi: 10.1016/0011-2240(70)90014-3.Cryobiology. 1970.PMID: 5498355No abstract available.