function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Palaeontologica Polonica', 4],
    ['African Invertebrates', 3],
    ['Bulletin of the American Museum of Natural History', 1],
    ['Canadian Entomologist', 2],
    ['European Journal of Taxonomy', 2],
    ['Far Eastern Entomologist', 16],
    ['Geodiversitas', 3],
    ['Palaeoentomology', 8],
    ['Public Library of Science, ONE', 1],
    ['ZooKeys', 24],
    ['Zoological Journal of the Linnean Society', 3],
    ['Zoological Science', 1],
    ['Zoological Systematics', 5],
    ['Zootaxa', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=82)',
    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);