function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Historia fisica y politica de Chile', 1],
    ['Insect Systematics and Diversity', 3],
    ['Insecta Mundi', 2],
    ['Journal of Natural History', 13],
    ['List of the Specimens of Lepidopterous Insects in the Collection of the British Museum', 2],
    ['Nachrichten des entomologischen Vereins Apollo, Neue Folge', 2],
    ['SHILAP Revista de Lepidopterologia', 1],
    ['Tropical Lepidoptera Research', 2],
    ['ZooKeys', 108],
    ['Zootaxa', 33]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=167)',
    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);