function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Constable', 7],
    ['A. F. Rose', 2],
    ['Asiatic Researches', 10],
    ['Biodiversity Data Journal', 2],
    ['Calcutta Journal of Natural History, and Miscellany of the Arts and Sciences in India', 3],
    ['FishTaxa', 2],
    ['Journal of Chosen Natural History Society', 2],
    ['Laurentius Salvius', 5],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 5],
    ['Proceedings of the Zoological Society of London, B', 4],
    ['Travaux du Museum d\'Histoire Naturelle \' Grigore Antipa\'', 3],
    ['Turkish Journal of Zoology', 4],
    ['Zoological Systematics', 3],
    ['Zoosystematics and Evolution', 6],
    ['Zootaxa', 63],
    ['Other (35)', 38]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=159)',
    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);