function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arthropoda Selecta', 1],
    ['Biodiversity Data Journal', 12],
    ['Bulletin of the National Museum of Nature and Science, Series A (Zoology)', 1],
    ['European Journal of Taxonomy', 6],
    ['Far Eastern Entomologist', 1],
    ['Insect Systematics & Evolution', 12],
    ['International Journal for Parasitology: Parasites and Wildlife', 1],
    ['Journal of Natural History', 1],
    ['Kongliga Svenska Vetenskaps-Akademiens Handlingar, Ny Följd', 1],
    ['Revista do Museu Paulista', 1],
    ['ZooKeys', 8],
    ['Zoological Journal of the Linnean Society', 5],
    ['Zoological Systematics', 2],
    ['Zootaxa', 183]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=235)',
    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);