function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 1],
    ['Bulletin de la Société Philomathique de Paris, Série 7', 1],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 2', 1],
    ['Bulletin of the Raffles Museum', 1],
    ['Cybium', 3],
    ['Ichthyological Exploration of Freshwaters', 1],
    ['Journal of Natural History', 7],
    ['Maass, " Durch Zentral. Sumatra "', 1],
    ['Memoirs of the California Academy of Sciences', 1],
    ['Natural History Bulletin of the Siam Society', 1],
    ['Natuur en Geneeskunde Archief voor Nederlandsche-Indië', 1],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 2],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 7],
    ['Proceedings of the United States National Museum, 3', 3],
    ['Raffles Bulletin of Zoology', 1],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=36)',
    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);