function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Malenovský, Igor & Lauterer, Pavel & Labina, Eugenia', 1],
    ['Ouvrard, David & Burckhardt, Daniel & Cocquempot, Christian', 2],
    ['Percy Csiro, Diana M.', 2],
    ['Spodek, Malkie & Burckhardt, Daniel & Freidberg, Amnon', 3],
    ['Suh, Soo-Jung & Choi, Deuk-Soo', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=9)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);