Revising the tortoise


  • Lawrence E M Grierson

    Corresponding author
    1. Hamilton, Ontario, Canada
    • Correspondence : Dr Lawrence E M Grierson, Department of Family Medicine, McMaster University, McMaster Innovation Park, 175 Longwood Road South, Suite 201A, Hamilton, Ontario L8P 0A1, Canada. Tel: 00 1 905 525 9140 (ext. 22738); E-mail:

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