GREENSTEIN, ADRIAN J. M.B.B.Ch., F.A.C.S., F.R.C.S.; SACHAR, DAVID B. M.D., F.A.C.P., F.A.C.G.; KARK, ALLAN E. M.B.B.Ch., F.A.C.S., F.R.C.S.S Author Information
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Greenstein et al. (1975) studied this question.
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