function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Glaw, Frank & Köhler, Jörn & Vences, Miguel', 1],
    ['Rakotoarison, Andolalao & Glaw, Frank & Vieites, David R.', 5],
    ['Rakotoarison, Andolalao & Scherz, Mark D. & Koehler, Joern', 5],
    ['Rosa, Gonçalo M. & Crottini, Angelica & Noël, Jean', 1],
    ['Scherz, Mark D. & Koehler, Joern & Vences, Miguel & Glaw, Frank', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    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);