function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bueno-Villegas, Julián & Sierwald, Petra', 6],
    ['De Zoysa, H. K. S. & Nguyen, Anh D. & Wickramasinghe, S.', 11],
    ['Decker, Peter & Reip, Hans Simon & Voigtlaender, Karin', 6],
    ['Enghoff, Henrik', 12],
    ['Golovatch, Sergei & Vandenspiegel, Didier', 9],
    ['Golovatch, Sergei I. & Wesener, Thomas', 33],
    ['Hollier, John & Stöckli, Eduard & Wesener, Thomas', 80],
    ['John Hollier & Edmund Schiller & Nesrine Akkari', 23],
    ['Keller, Oliver & Dunn, Ann & Soto-Adames, Felipe', 7],
    ['Rodrigues, Patrícia E. S. & Ott, Ricardo', 9],
    ['Shelley, Rowland M. & Floyd, Samuel D.', 16],
    ['Shelley, Rowland M. & Golovatch, Sergei I.', 6],
    ['Wesener, Thomas', 11],
    ['Wesener, Thomas & Enghoff, Henrik', 10],
    ['Wesener, Thomas & Enghoff, Henrik & Sierwald, Petra', 65],
    ['Other (29)', 78]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=382)',
    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);