function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Universitatis Daugavpiliensis', 2],
    ['Acta Entomologica Musei Nationalis Pragae', 14],
    ['African entomology', 4],
    ['Biodiversity Data Journal', 1],
    ['Check List', 1],
    ['Entomological Review of Japan', 1],
    ['Insecta Mundi', 36],
    ['Journal of Natural History', 49],
    ['Kogane', 2],
    ['Linzer biologische Beiträge', 3],
    ['Proceedings of the Entomological Society of Washington', 1],
    ['The Coleopterists Bulletin', 8],
    ['ZooKeys', 4],
    ['Zoosystema', 6],
    ['Zootaxa', 71],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=204)',
    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);