function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Museum Novitates', 6],
    ['Bulletin de la Société Impériale des Naturalistes de Moscou', 1],
    ['Der Naturforscher, Halle', 1],
    ['Dobutsugaku Zasshi', 1],
    ['Entomo Helvetica', 1],
    ['Genome Biology and Evolution', 5],
    ['Havniae & Lipsiae', 13],
    ['Insecta Mundi', 2],
    ['International Journal of Systematic and Evolutionary Microbiology', 27],
    ['Journal of Species Research', 38],
    ['Linzer biologische Beiträge', 2],
    ['Molecular Phylogenetics and Evolution', 3],
    ['Phytochemistry', 6],
    ['Zoological Journal of the Linnean Society', 5],
    ['Zootaxa', 4],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=121)',
    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);