function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blaschke, F.', 1],
    ['Born, Ignaz von', 1],
    ['Cowie, Robert H.', 1],
    ['DeVries, Thomas J.', 2],
    ['Linnaeus, Carolus', 25],
    ['Low, Martyn E. Y. & Tan, Siong Kiat', 2],
    ['Müller, Otto Friedrich', 1],
    ['Röding, Peter Friedrich', 2],
    ['Sacchetti, Claudia & Landau, Bernard & Ávila, Sérgio P.', 2],
    ['Sowerby, James DeCarle', 1],
    ['Symonds, Malcolm Francis & Pacaud, Jean-Michel', 2],
    ['Zvonareva, Sofya & Kantor, Yuri', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=44)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);