function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 1],
    ['Archiv für Naturgeschichte', 4],
    ['Bulletin of the National Museum of Nature and Science, Series A (Zoology)', 1],
    ['European Journal of Taxonomy', 2],
    ['Geodiversitas', 2],
    ['Journal of Natural History', 1],
    ['Memoirs of Museum Victoria', 14],
    ['Raffles Bulletin of Zoology', 3],
    ['Records of the Zoological Survey of India', 1],
    ['Report on the Scientific Results of the Voyage of H. M. S. “ Challenger ” during the Years 1873 - 76 under the Command of Captai', 1],
    ['Transactions of the Linnean Society of London', 1],
    ['Zoological Journal of the Linnean Society', 1],
    ['Zoosystema', 15],
    ['Zootaxa', 59]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=106)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);