function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boury-Esnault, Nicole & Vacelet, Jean & Dubois, Maude', 1],
    ['Dohrmann, Martin & Göcke, Christian & Janussen, Dorte', 4],
    ['Moser, Julia & Moraes, Fernando C. & Castello-Branco, Cristiana', 3],
    ['Reiswig, Henry M.', 4],
    ['Reiswig, Henry M. & Stone, Robert P.', 3],
    ['Tabachnick, Konstantin & Fromont, Jane & Ehrlich, Hermann', 2],
    ['Tabachnick, Konstantin R.', 2],
    ['Tabachnick, Konstantin R. & Menshenina, Larisa L.', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);