function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Heimburg, Helge & Doczkal, Dieter & Holzinger, Werner E.', 2],
    ['Hironaga, Teruhiko & Maruyama, Munetoshi', 4],
    ['Jarvis, Charlie', 3],
    ['Knab, Frederick & Malloch, John Russell', 2],
    ['Kočić, Anja & Vujić, Ante & Tot, Tamara', 3],
    ['MAZáNEK, Libor & VONIČKA, Pavel & PREISLER, JiřÍ', 3],
    ['Meigen, Johann Wilhelm', 5],
    ['Montoya, Augusto L.', 8],
    ['Mutin, V. A.', 2],
    ['Mutin, V. A. & Barkalov, A. V.', 2],
    ['Pétremand, Gaël & Speight, Martin C. D. & Castella, Emmanuel', 2],
    ['Reemer, Menno & Bot, Sander', 10],
    ['Reemer, Menno & Stahls, Gunilla', 9],
    ['Scarparo, Giulia & Wolton, Robert & Molfini, Marco', 4],
    ['Tian, Jing & Huo, Ke-Ke & Zhang, Chun-Tian & Ren, Bing-Zhong', 5],
    ['Other (12)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=78)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);