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 ', 6],
    ['Bulletin de l\'Institut Océanographique de Monaco', 1],
    ['Cybium', 1],
    ['Denkschriften der Kaiserlichen Akademie der Wissenschaften, Wien', 1],
    ['E. J. Brill', 5],
    ['La Nature, Paris', 1],
    ['Longman, Brown', 1],
    ['Proceedings of the Biological Society of Washington', 3],
    ['Proceedings of the United States National Museum, 3', 15],
    ['Proceedings of the Zoological Society of London, B', 1],
    ['Records of the Australian Museum', 1],
    ['Report on the Scientific Results of the Voyage of H. M. S. “ Challenger ” during the Years 1873 - 76 under the Command of Captai', 3],
    ['Salviucci', 1],
    ['Scientific Results of the M. Sars North Atlantic Deep-Sea Expedition 1910', 1],
    ['Zootaxa', 8],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=50)',
    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);