function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 190],
    ['Bulletin of the Museum of Comparative Zoology at Harvard College', 156],
    ['European Journal of Taxonomy', 295],
    ['Geodiversitas', 40],
    ['Journal of Natural History', 42],
    ['Laurentius Salvius', 36],
    ['Memoirs of Museum Victoria', 181],
    ['Raffles Bulletin of Zoology', 29],
    ['Report on the Scientific Results of the Voyage of H. M. S. Challenger During the Years 1873 – 76, Zoology', 54],
    ['Reports of Science Research Voyage of H. M. S. Challenger. Zoology', 41],
    ['Species Diversity', 100],
    ['ZooKeys', 133],
    ['Zoological Journal of the Linnean Society', 145],
    ['Zoosystema', 494],
    ['Zootaxa', 2419],
    ['Other (88)', 329]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=4684)',
    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);