function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anlaş, S.', 2],
    ['Asenjo, Angélico & e, Sistemática & de, Bioecologia & Coleoptera', 1],
    ['Assing, V.', 2],
    ['Assing, Volker', 1],
    ['Assing, Volker & Schülke, Michael', 1],
    ['Della Rocca, Francesca & Stefanelli, Silvia & Cardarelli, Elisa', 2],
    ['Hector, J.', 1],
    ['Khachikov, E. A.', 1],
    ['Lü, Liang & Zhou, Hong-Zhang', 13],
    ['Mannerheim, C. G.', 1],
    ['Navarrete-Heredia, José Luis & Gómez-Rodríguez, Cecilia', 2],
    ['Schülke, M.', 3],
    ['Webster, Reginald P. & Davies, Anthony E. & Klimaszewski, Jan', 1],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);