function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 41],
    ['African Invertebrates', 12],
    ['Alpine Entomology', 6],
    ['Berliner entomologische Zeitschrift', 7],
    ['Biodiversity Data Journal', 78],
    ['CHIRONOMUS Journal of Chironomidae Research', 141],
    ['Entomo Helvetica', 12],
    ['Far Eastern Entomologist', 12],
    ['Insect systematics & evolution', 8],
    ['Journal of Entomological and Acarological Research', 8],
    ['Journal of Natural History', 55],
    ['Raffles Bulletin of Zoology', 26],
    ['ZooKeys', 271],
    ['Zoological Journal of the Linnean Society', 30],
    ['Zootaxa', 3152],
    ['Other (44)', 98]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=3957)',
    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);