function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aistleitner, Eyjolf', 2],
    ['Bivar-De-Sousa, António & Vasconcelos, Sasha & Mendes, Luís F.', 8],
    ['Delabye, Sylvain & Maicher, Vincent & Safian, Szabolcs', 1],
    ['Franeta, Filip', 1],
    ['Hsu, Yu-Feng & Lu, Chen-Chih & Huang, Hang-Chi & Liang, Jia-Yuan', 1],
    ['Irungbam, Jatishwor Singh & Meitei, Laishram Ricky', 20],
    ['LANG, SONGYUN & XUE, DAYONG & HAN, HONGXIANG', 1],
    ['Swezey, O. H.', 1],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);