function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Asenjo, Angélico & e, Sistemática & de, Bioecologia & Coleoptera', 3],
    ['Assing, V.', 5],
    ['Assing, V. & Schülke, M. & M. R & A. S', 1],
    ['Assing, Volker', 26],
    ['Assing, Volker & Schülke, Michael & Brachat, Volker', 1],
    ['Blackburn, T. & Sharp, David', 1],
    ['Broun, Thomas', 5],
    ['Dejean, Pierre François Marie Auguste', 1],
    ['Jiang, Nan & Yang, Chao & Xue, Dayong & Han, Hongxiang', 1],
    ['Kraatz, G.', 1],
    ['Navarrete-Heredia, José Luis & Gómez-Rodríguez, Cecilia', 2],
    ['V, Alexey & V, Alexander & Barševskis, Arvids', 1],
    ['Wollaston, T. Vernon', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=49)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);