function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Museum Novitates', 19],
    ['Beitr. Araneol.', 2],
    ['Die Tierwelt Deutschlands', 2],
    ['Fauna Regni Hunagriae', 2],
    ['Fauna of Zheijang', 2],
    ['J. Arachnol.', 2],
    ['J. Hanhzhou Univ. (nat. Sci.)', 2],
    ['J. Inst. Polytechnics Osaka City, D', 2],
    ['Mitt. Abt. Zool. Landesmus. Joanneum', 2],
    ['Takinawa Publishers', 3],
    ['The Journal of Arachnology', 3],
    ['The Spiders of Europe, a Synthesis', 7],
    ['ZooKeys', 8],
    ['Zoological Journal of the Linnean Society', 10],
    ['Zootaxa', 24],
    ['Other (19)', 23]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=113)',
    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);