function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Artois, Tom & Willems, Wim & De Roeck, Els & Jocqué, Merlijn', 2],
    ['Brusa, Francisco & Damborenea, Cristina & Noreña, Carolina', 5],
    ['Damborenea, Cristina & Brusa, Francisco & Noreña, Carolina', 5],
    ['Hochberg, Rick & Cannon, Lester R. G.', 5],
    ['João A. L. Braccini & Francisco Brusa & Ana M. Leal-Zanchet', 1],
    ['Lu, Yan-Hong & Wu, Cheng-Chen & Xia, Xiao-Jie & Wang, An-Tai', 4],
    ['Lunaschi, Lia I. & Álvarez, Victor Hugo Merlo', 8],
    ['Noreña, Carolina & Eitam, Avi & Blaustein, Leon', 4],
    ['Steenkiste, Niels Van & Gobert, Stefan & Davison, Paul', 9],
    ['Steenkiste, Niels Van & Tessens, Bart & Krznaric, Kathleen', 5],
    ['Steenkiste, Niels Van & Volonterio, Odile & Schockaert, Ernest', 1],
    ['Xia, Xiao-Jie & Lu, Yan-Hong & Wang, An-Tai', 2],
    ['Zhang, Hang & Li, Yi-Kui & Wu, Cheng-Chen & Wang, An-Tai', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);