function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arkiv för zoologi, 2', 2],
    ['BMC Evolutionary Biology', 1],
    ['Journal of Natural History', 16],
    ['Journal of Zoological Systematics and Evolutionary Research', 1],
    ['Memoirs of the Queensland Museum', 1],
    ['Nature', 4],
    ['Proceedings of the Royal Society of London, Series B, Biological Sciences', 1],
    ['Public Library of Science, ONE', 9],
    ['Trudy Karadahs\'koyi Nauchnoyi Stantsiyi imeni T. I. Vyazems\'koho', 1],
    ['Zoologica Scripta', 4],
    ['Zoological Journal of the Linnean Society', 25],
    ['Zootaxa', 117]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=182)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);