function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['D. K. Yeates', 5],
    ['Dikow, Torsten & Agosti, Donat', 8],
    ['Evenhuis, Neal L.', 1],
    ['Ferguson, David J. & Yeates, David K.', 1],
    ['Hermann, Friedrich', 5],
    ['Irwin, Michael E. & Wiegmann, Brian M.', 1],
    ['Melander, A. L.', 1],
    ['Sergei J. Paramonov', 2],
    ['Stuckenberg, B. R.', 1],
    ['Westwood, John O.', 3],
    ['Yeates, David K. & Oberprieler, Stefanie K.', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=42)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);