function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 156],
    ['Backhuys', 48],
    ['China Agricultural University Press', 32],
    ['Cimbebasia', 17],
    ['European Journal of Taxonomy', 56],
    ['F. W. Forstmann', 20],
    ['International journal of entomology', 19],
    ['Journal of Natural History', 101],
    ['Journal of the Entomological Society of Southern Africa', 38],
    ['Linzer biologische Beiträge', 194],
    ['Memoirs of the Entomological Society of Southern Africa', 44],
    ['University of California Publications in Entomology', 55],
    ['ZooKeys', 76],
    ['Zoological Systematics', 14],
    ['Zootaxa', 1168],
    ['Other (56)', 172]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2210)',
    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);