function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aquaria, St Gallen', 19],
    ['Aquarien und Terrarien Zeitschrift', 17],
    ['Check List', 27],
    ['Copeia', 41],
    ['Ichthyological Exploration of Freshwaters', 43],
    ['Miscellaneous Publications of the Museum of Zoology University of Michigan', 27],
    ['Neotropical Ichthyology', 117],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 26],
    ['Proceedings of the Zoological Society of London, B', 17],
    ['Revue française d\'Aquariologie Herpétologie', 18],
    ['ZooKeys', 17],
    ['Zoological Journal of the Linnean Society', 34],
    ['Zoologischer Anzeiger', 30],
    ['Zoosystematics and Evolution', 22],
    ['Zootaxa', 573],
    ['Other (178)', 536]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1564)',
    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);