function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Museum Novitates', 2],
    ['Amphibia-Reptilia', 2],
    ['Amphibian & Reptile Conservation', 3],
    ['Biodiversity Data Journal', 4],
    ['Check List', 10],
    ['Current Herpetology', 2],
    ['European Journal of Taxonomy', 8],
    ['Herpetozoa', 5],
    ['Journal of Natural History', 3],
    ['Journal of Threatened Taxa', 10],
    ['Raffles Bulletin of Zoology', 9],
    ['ZooKeys', 28],
    ['Zoological Journal of the Linnean Society', 48],
    ['Zoological Science', 5],
    ['Zootaxa', 88],
    ['Other (9)', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=238)',
    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);