function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zoologica Mexicana-Nueva Serie', 1],
    ['Arkiv för zoologi', 1],
    ['Articulata', 1],
    ['Bericht über die zur Bekanntmachung geeigneten Verhandlungen der Königlichen Preußischen Akademie der Wissenschaften zu Berlin', 1],
    ['Berliner entomologische Zeitschrift / herausgegeben von dem Entomologischen Verein in Berlin', 8],
    ['Bulletin of the British Museum (Natural History). Entomology', 9],
    ['Insect systematics & evolution', 6],
    ['Journal of Natural History', 20],
    ['Journal of Orthoptera Research', 5],
    ['Journal of Orthoptera research', 3],
    ['Raffles Bulletin of Zoology', 7],
    ['Umwelt-Vollzug', 10],
    ['Zoological Journal of the Linnean Society', 5],
    ['Zoosystema', 3],
    ['Zootaxa', 1119],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1203)',
    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);