function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 1],
    ['Archiv für Molluskenkunde', 42],
    ['Basteria', 4],
    ['Biodiversity Data Journal', 13],
    ['Biological Journal of Armenia', 1],
    ['European Journal of Taxonomy', 9],
    ['Iberus: Revista de la Sociedad Española de Malacología', 2],
    ['Journal of Conchology', 1],
    ['Journal of Natural History', 20],
    ['Linzer biologische Beiträge', 18],
    ['Records of the Australian Museum', 1],
    ['Schriften zur Malakozoologie', 1],
    ['Systematics and Biodiversity', 1],
    ['ZooKeys', 11],
    ['Zootaxa', 8],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=135)',
    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);