function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bonis, Louis de', 2],
    ['Fournier, Morgane & Ladevèze, Sandrine & Verger, Kévin Le', 8],
    ['Frailey, David', 1],
    ['Gagnaison, Cyril & Mennecart, Bastien & Bailleul, Julien', 1],
    ['Ginsburg, Léonard & Cheneval, Jacques & Janvier, Philippe', 4],
    ['Hunt, Robert M.', 18],
    ['Hunt, Robert M. & Yatkola, Jr Daniel A.', 1],
    ['Morales, Jorge & Fejfar, Oldřich & Heizmann, Elmar & Wagner, Jan', 12],
    ['Morlo, Michael & Miller, Ellen R. & Bastl, Katharina', 3],
    ['Robert M. Hunt, Jr.', 5],
    ['Siliceo, Gema & Morales, Jorge & Antón, Mauricio', 1],
    ['Solé, Floréal & Lesport, Jean-François & Heitz, Antoine', 2],
    ['Verger, Kévin Le & Solé, Floréal & Ladevèze, Sandrine', 2],
    ['Werdelin, Lars', 2],
    ['Werdelin, Lars & Simpson, Scott W.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=64)',
    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);