function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Museum Novitates', 13],
    ['Amphibian & Reptile Conservation', 6],
    ['Biodiversity Data Journal', 5],
    ['Check List', 16],
    ['Copeia', 5],
    ['Current Herpetology', 5],
    ['Geodiversitas', 5],
    ['Herpetozoa', 7],
    ['Laurentius Salvius', 18],
    ['Raffles Bulletin of Zoology', 16],
    ['Vertebrate Zoology', 10],
    ['ZooKeys', 35],
    ['Zoological Journal of the Linnean Society', 22],
    ['Zoological Science', 6],
    ['Zootaxa', 83],
    ['Other (21)', 42]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=294)',
    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);