function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bedard, Nicolas & Brunke, Adam & Bloin, Pierrick', 1],
    ['López, Hugo Eduardo Fierros-', 3],
    ['Löbl, Ivan', 84],
    ['Löbl, Ivan & Hájek, Jiří', 2],
    ['Löbl, Ivan & Leschen, Richard A. B.', 10],
    ['Löbl, Ivan & Leschen, Richard A. B. & Warner, William B.', 11],
    ['Löbl, Ivan & Smetana, Aleš', 21],
    ['Navarrete-Heredia, José Luis & Gómez-Rodríguez, Cecilia', 2],
    ['Ogawa, Ryo & Löbl, Ivan', 10],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=147)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);