function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['DeVries, Thomas J.', 12],
    ['Gloeer, Peter & Pesic, Vladimir', 1],
    ['Gurumayum, S. D.', 2],
    ['Hansen, Thomas', 2],
    ['Harzhauser, Mathias & Guzhov, Aleksandr & Landau, Bernard', 105],
    ['Islamoğğlu, Yeşşim & Dominio, Stefano & Kowalke, Thorsten', 8],
    ['Makiyama, Jirô', 1],
    ['Mariottini, Paolo & Smriglio, Carlo & Oliverio, Marco', 1],
    ['Pacaud, Jean-Michel', 1],
    ['Pfister, Thérèse & Wegmüller, Urs', 1],
    ['Reid, David G.', 16],
    ['Reid, David G. & Claremont, Martine', 4],
    ['Strong, Ellen E.', 4],
    ['Thivaiou, Danae & Harzhauser, Mathias & Koskeridou, Efterpi', 5],
    ['Zvonareva, Sofya & Kantor, Yuri', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=169)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);