function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Asenjo, Angélico & e, Sistemática & de, Bioecologia & Coleoptera', 2],
    ['Assing, V.', 7],
    ['Assing, Volker', 6],
    ['Erichson, Wilhelm Ferdinand', 1],
    ['Herman, Lee', 1],
    ['Herman, Lee H.', 29],
    ['Li, Wen-Rong & Xie, Nan-Nan & Li, Li-Zhen', 3],
    ['Rougemont, Guillaume de', 131]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=180)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);