Endoanal ultrasound
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PII: S0263-9319(08)00095-1
doi:10.1016/j.mpsur.2008.04.014
© 2008 Elsevier Ltd. All rights reserved.
PII: S0263-9319(08)00095-1
doi:10.1016/j.mpsur.2008.04.014
© 2008 Elsevier Ltd. All rights reserved.