function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 9],
    ['Alpine Entomology', 8],
    ['Dipterists Digest, Second Series', 1],
    ['Entomo Helvetica', 1],
    ['Japanese Journal of Systematic Entomology', 1],
    ['Journal of Natural History', 2],
    ['Journal of the Royal Society of New Zealand', 1],
    ['Proceedings of the Japanese Society of Systematic Zoology', 1],
    ['Species Diversity', 1],
    ['Vestnik Zoologii', 5],
    ['ZooKeys', 17],
    ['Zoodiversity', 10],
    ['Zootaxa', 65]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=122)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);