function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Venezuelica', 1],
    ['Aquarien und Terrarien Zeitschrift', 1],
    ['Beaufortia', 1],
    ['Bonner Zoologische Monographien', 5],
    ['Bonner zoologische Beiträge', 1],
    ['Buntbarsche Bull.', 1],
    ['Das Aquarium', 2],
    ['Dtsch. Cichliden-Ges. Inf.', 1],
    ['Ichthyological Exploration of Freshwaters', 1],
    ['Neotropical Ichthyology', 3],
    ['Senckenbergiana Biologica', 3],
    ['Vertebrate Zoology', 5],
    ['Zoologica Scripta', 5],
    ['Zoologischer Anzeiger', 2],
    ['Zootaxa', 2],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=41)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);