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],
    ['Annals of Philosophy, New Series', 1],
    ['Archiv fur Naturgeschichte, Jahr', 1],
    ['Atti della Accademia Pontaniana', 5],
    ['Journal of Natural History', 6],
    ['Memoirs of the College of Science, Kyoto Imperial University, B', 1],
    ['Memoirs of the Indian Museum', 4],
    ['Proceedings of the Imperial Academy', 1],
    ['Publications of the Seto Marine Biological Laboratory', 1],
    ['Ray Society', 3],
    ['Report of the British Association for the Advancement of Science', 1],
    ['Studia Marina Sinica', 1],
    ['Zoologische Mededelingen, Leiden', 1],
    ['Zootaxa', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=29)',
    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);