function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Museum Novitates', 23],
    ['Annals of the Entomological Society of America', 4],
    ['Bulletin of the American Museum of Natural History', 22],
    ['Bulletin of the Association for Mexican Cave Studies', 4],
    ['Bulletin of the British Arachnological Society', 2],
    ['Carnegie Institution of Washington Publication', 2],
    ['Ciencia, Mexico City', 2],
    ['European Journal of Taxonomy', 2],
    ['Journal of Arachnology', 8],
    ['Journal of Zoology, London', 2],
    ['Journal of the New York Entomological Society', 2],
    ['Palaeoentomology', 3],
    ['Revista Ibérica de Aracnología', 6],
    ['Zoological Systematics', 5],
    ['Zootaxa', 31],
    ['Other (20)', 22]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=140)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);