function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Burckhardt, Daniel & Cort, Giulia Dalle & Queiroz, Dalva Luiz de', 5],
    ['Burckhardt, Daniel & Sharma, Anamika & Raman, Anantanarayanan', 2],
    ['Cho, G. & Labina, E. S. & Lee, S.', 1],
    ['Cho, Geonho & Burckhardt, Daniel & Lee, Seunghwan', 7],
    ['DROHOJOWSKA, Jowita & KLASA, Anna', 2],
    ['Froggatt, Walter Wilson', 1],
    ['Halbert, Susan E. & Burckhardt, Daniel', 1],
    ['Ouvrard, David & Burckhardt, Daniel & Cocquempot, Christian', 1],
    ['Percy, Diana M. & Rung, Alessandra & Hoddle, Mark S.', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    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);