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Pearcy MJ, Howie DW.Pearcy MJ, et al. Among authors: howie dw.Proc Inst Mech Eng H. 1991;205(4):257-9. doi: 10.1243/PIME_PROC_1991_205_302_02.Proc Inst Mech Eng H. 1991.PMID: 1670084No abstract available.