function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arachnologische Mitteilungen', 2],
    ['Arthropoda Selecta', 1],
    ['Biodiversity Data Journal', 18],
    ['Caucasian Entomological Bulletin', 4],
    ['Far Eastern Entomologist', 1],
    ['Raffles Bulletin of Zoology', 7],
    ['Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin', 1],
    ['State Fauna Series 4 Fauna of Meghalaya Part 2', 2],
    ['UPLB Museum Publications in Natural History', 1],
    ['ZooKeys', 2],
    ['Zoodiversity', 1],
    ['Zoological Systematics', 8],
    ['Zoosystema', 7],
    ['Zootaxa', 38]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=93)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);