function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abhandlungen Herausgegeben vom Naturwissenschaftlichen Verein zu Bremen', 1],
    ['Bauer und Raspe', 3],
    ['Berliner Entomologische Zeitschrift', 1],
    ['Bulletin du Musée Royal d\'Histoire Naturelle de Belgique', 1],
    ['Bulletin of the Illinois Natural History Survey', 1],
    ['Canadian Entomologist', 1],
    ['Magyar Tudományos Akadémia Matematikai és Természettudományi Közlemények', 3],
    ['Manchester University Press', 1],
    ['Neueste Schriften der Naturforschenden Gesellschaft in Danzig', 1],
    ['Proceedings of the Dorset Natural History and Archaeological Society', 1],
    ['Record of American Entomology', 1],
    ['Természetrajzi Füzetek', 11],
    ['Travaux de l\'Institute de Zoologique de l\'Académie Sciences de l\'U. R. S. S.', 2],
    ['Zoologischer Anzeiger', 2],
    ['Zootaxa', 8],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=43)',
    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);