function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 1],
    ['African Invertebrates', 11],
    ['African invertebrates', 4],
    ['Annales Zoologici', 18],
    ['Biodiversity Data Journal', 35],
    ['Check List', 4],
    ['Entomo Helvetica', 2],
    ['Fragmenta Faunistica', 25],
    ['Insect Systematics and Diversity', 30],
    ['Journal of Natural History', 92],
    ['Linzer biologische Beiträge', 6],
    ['Mitteilungen der Schweizerischen Entomologischen Gesellschaft', 6],
    ['Proceedings of the Entomological Society of Washington', 4],
    ['ZooKeys', 5],
    ['Zootaxa', 181],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=428)',
    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);