function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Universitatis Daugavpiliensis', 1],
    ['African Invertebrates', 10],
    ['African invertebrates', 2],
    ['Ballière', 12],
    ['Biodiversity Data Journal', 268],
    ['European Journal of Taxonomy', 31],
    ['Insecta Mundi', 2],
    ['International journal of environmental studies', 5],
    ['Journal of Hymenoptera Research', 8],
    ['Journal of Natural History', 144],
    ['Latvijas Entomologs', 31],
    ['Linzer biologische Beiträge', 11],
    ['Records of the Zoological Survey of India', 4],
    ['ZooKeys', 2],
    ['Zootaxa', 18],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=552)',
    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);