function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Museum Novitates', 2],
    ['Amphibian & Reptile Conservation', 2],
    ['An International Journal of Paleobiology', 1],
    ['Bulletin of the American Museum of Natural History', 16],
    ['Fossil Record', 5],
    ['Geodiversitas', 22],
    ['Herpetologica', 1],
    ['Herpetozoa', 2],
    ['Ichthyology & Herpetology', 1],
    ['Isis von Oken', 1],
    ['Joan Thomae', 7],
    ['Laurentius Salvius', 13],
    ['Magasin Encyclopédique, ou Journal des Sciences, des Lettres et des Arts', 1],
    ['Vertebrate Zoology', 1],
    ['Zootaxa', 24],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=100)',
    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);