function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bezděk, Aleš & Hájek, Jiří & Ascr, Biology Centre', 1],
    ['Bollino, Maurizio & Uliana, Marco & Sabatinelli, Guido', 14],
    ['Ghahari, Hassan & Nikodým, Milan & M, Pygopleurus', 20],
    ['Keith, Denis & Uliana, Marco', 1],
    ['Mitter, H.', 3],
    ['Mitter, Heinz', 5],
    ['Polat, Alper & Yildirim, Erol & Uliana, Marco', 8],
    ['Uliana, Marco & Bollino, Maurizio & Sabatinelli, Guido', 1],
    ['Ziani, Stefano & Bezděk, Aleš & Branco, Tristão', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    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);