function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Parasitologica', 1],
    ['American Museum Novitates', 1],
    ['Annals of the Brazilian Academy of Sciences', 1],
    ['Bijdragen tot de Dierkunde', 4],
    ['Biodiversity Data Journal', 2],
    ['Contributions to Zoology', 3],
    ['Journal of Natural History', 19],
    ['Proceedings of the United States National Museum', 18],
    ['Sanfilippo', 2],
    ['Species Diversity', 19],
    ['Systematic Parasitology', 4],
    ['ZooKeys', 39],
    ['Zoological Science', 3],
    ['Zoosystema', 9],
    ['Zootaxa', 368],
    ['Other (11)', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=504)',
    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);