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 ', 4],
    ['Atti della Reale Accademia delle scienze di Torino', 1],
    ['Bulletin of the United States Bureau of Fisheries', 1],
    ['Bulletin of the United States Fish Commission', 1],
    ['Memoirs of the Indian Museum', 4],
    ['Nouvelles Archives du Muséum d\'Histoire Naturelle, Paris, Série 4', 5],
    ['Proceedings of the Zoological Society of London', 2],
    ['Ray Society', 4],
    ['Reports of Science Research Voyage of H. M. S. Challenger. Zoology', 1],
    ['Spolia Zeylanica [Ceylon Journal Sci], Section B-Zoo', 1],
    ['Zoosystema', 2],
    ['Zoosystematics and Evolution', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=28)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);