function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Asenjo, Angélico & e, Sistemática & de, Bioecologia & Coleoptera', 1],
    ['Assing, V.', 1],
    ['Assing, V. & Feldmann, B.', 1],
    ['Chani-Posse, Mariana & Newton, Alfred F. & Hansen, Aslak Kappel', 1],
    ['Ferro, Michael L. & Gimmel, Matthew L. & Harms, Kyle E.', 1],
    ['Hromádka, L.', 28],
    ['Li, Liang & Zhou, Hong-Zhang', 1],
    ['Mikátová, Šárka & Macháčková, Lenka & Hájek, Jiří', 5],
    ['Rougemont, G. de', 1],
    ['Schillhammer, Harald', 1],
    ['Shaw, Josh Jenkins & Solodovnikov, Alexey', 2],
    ['Solodovnikov, Alexey', 1],
    ['Webster, Reginald P. & Smetana, Ales & Sweeney, Jon D.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=45)',
    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);