function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annals of the Entomological Society of America', 3],
    ['Contributions of the American Entomological Institute', 16],
    ['Deutsche Entomologische Zeitschrift', 1],
    ['Fossil Record', 4],
    ['Invertebrate systematics', 4],
    ['Linzer biologische Beiträge', 8],
    ['Systematic entomology', 15],
    ['Zoological Systematics', 2],
    ['Zoosystematics and Evolution', 2],
    ['Zootaxa', 23]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=78)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);