function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 38],
    ['Bulletin of the American Museum of Natural History', 57],
    ['European Journal of Taxonomy', 124],
    ['Journal of Natural History', 483],
    ['Memoirs of Museum Victoria', 25],
    ['Nauplius', 58],
    ['Raffles Bulletin of Zoology', 64],
    ['Records of the Australian Museum', 111],
    ['Species Diversity', 18],
    ['Subterranean Biology', 39],
    ['ZooKeys', 318],
    ['Zoological Journal of the Linnean Society', 193],
    ['Zoosystema', 136],
    ['Zoosystematics and Evolution', 37],
    ['Zootaxa', 1172],
    ['Other (78)', 225]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=3098)',
    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);