function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bryner, Rudolf & Huemer, Peter & Wittland, Wolfgang', 2],
    ['Huemer, Peter & Van Nieukerken, Erik J.', 2],
    ['Huemer, Peter & Zlatkov, Boyan & Baixeras, Joaquin', 2],
    ['Kovacs, Sandor & Kovacs, Zoltan', 1],
    ['Martinez, Jose I. & Crane, Jonathan H. & Wasielewski, Jeff', 1],
    ['Pathania, Prakash C. & Das, Apurva & Chandra, Kailash', 2],
    ['Razowski, Józef & Landry, Bernard & Roque-Albelo, Lazaro', 1],
    ['Schmid, Juerg & Huemer, Peter', 1],
    ['Zlatkov, Boyan', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    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);