function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brock, Paul D. & Marshall, Judith A. & Beccaloni, George W.', 8],
    ['Cumming, Royce T.', 2],
    ['Cumming, Royce T. & Bank, Sarah & Le Tirant, Stephane', 7],
    ['Cumming, Royce T. & Le Tirant, Ste ́ phane & Linde, Jackson B.', 5],
    ['Cumming, Royce T. & Le Tirant, Stéphane', 1],
    ['Cumming, Royce T. & Leong, Jing V. & Lohman, David J.', 4],
    ['Cumming, Royce T. & Teemsma, Sierra N.', 4],
    ['Cumming, Royce T. & Thurman, Jessa H. & Youngdale, Sam', 4],
    ['Cumming, Royce T. & Tirant, Stephane Le & Teemsma, Sierra N.', 3],
    ['Delfosse, Emmanuel & Cliquennois, Nicolas & Depraetere, Marion', 3],
    ['Größer, D.', 1],
    ['Hennemann, Frank H. & Conle, Oskar V. & Gottardo, Marco', 20],
    ['Ho, George Wai-Chun', 5],
    ['Illiger, Johann Karl Wilhelm', 1],
    ['Kamp, Thomas Van De & Hennemann, Frank H.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=71)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);