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Lopez A, Good EI, Krehl WA.Lopez A, et al. Among authors: krehl wa.Gerontol Clin (Basel). 1971;13(4):171-80. doi: 10.1159/000245336.Gerontol Clin (Basel). 1971.PMID: 5116151No abstract available.
Lopez A, Krehl WA.Lopez A, et al. Among authors: krehl wa.Lancet. 1967 Sep 2;2(7514):485-7. doi: 10.1016/s0140-6736(67)91654-6.Lancet. 1967.PMID: 4166407No abstract available.