function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amurian Zoological Journal', 8],
    ['Biodiversity Data Journal', 2],
    ['Bishop Museum Occasional Papers', 34],
    ['Entomo Helvetica', 2],
    ['European Journal of Taxonomy', 10],
    ['Halteres', 2],
    ['Journal of the New York Entomological Society', 2],
    ['Konowia', 4],
    ['Proceedings of the Hawaiian Entomological Society', 15],
    ['Zoological Systematics', 2],
    ['Zoosystematica Rossica', 3],
    ['Zootaxa', 75]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=159)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);