Author Martin Frischer H. Heatlie S. Chapman D. Millson Year of Publication 2000 URL https://doi.org/10.2165/00124363-200002000-00013 DOI 10.2165/00124363-200002000-00013 Google ScholarDOIBibTeXEndNote X3 XMLEndNote 7 XMLEndnote taggedMarcRIS