function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bigelow, H. B. & Schroeder, W. C.', 1],
    ['Ebert, David A. & White, William T. & Ho, Hsuan-Ching', 2],
    ['Ebert, David A. & Wintner, Sabine P. & Kyne, Peter M.', 2],
    ['Elasmobranch, Its Implications For Global', 1],
    ['Jones, Christian M. & Driggers Iii, William B.', 1],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 1],
    ['Last, Peter R. & Bussarawit, Somchai', 1],
    ['Last, Peter R. & Séret, Bernard', 5],
    ['Stehmann, Matthias F. W. & Weigmann, Simon', 1],
    ['Weigmann, Simon & Stehmann, Matthias F. W.', 2],
    ['Weigmann, Simon & Stehmann, Matthias F. W. & Thiel, Ralf', 2],
    ['White, William T. & Ko’Ou, Alfred', 1],
    ['White, William T. & Last, Peter R.', 2],
    ['von Bonde, C. & Swart, D. B.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);