function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anales del Instituto de Biología, Universidad Nacional Autónoma de México (Series Zoología)', 1],
    ['Bulletin de l\'Institut Royal des Sciences Naturelles de Belgique, Biologie', 2],
    ['Bulletin of Marine Science', 3],
    ['Contributions to Zoology', 1],
    ['Crustaceana', 1],
    ['European Journal of Taxonomy', 3],
    ['Hydrobiologia', 1],
    ['Journal of Natural History', 7],
    ['Journal of crustacean biology', 3],
    ['Journal of the Marine Biological Association', 2],
    ['Proceedings of the Biological Society of Washington', 1],
    ['ZooKeys', 1],
    ['Zootaxa', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);