function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 1],
    ['African Invertebrates', 11],
    ['Biodiversity Data Journal', 78],
    ['European Journal of Taxonomy', 18],
    ['Insecta Mundi', 2],
    ['International journal of environmental studies', 1],
    ['Journal of Hymenoptera Research', 28],
    ['Journal of Natural History', 40],
    ['Latvijas Entomologs', 18],
    ['Linzer biologische Beiträge', 7],
    ['Zootaxa', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=206)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);