function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abhandlungen aus dem Gebiete die Naturwissenschaftlichen Verein', 1],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 18],
    ['Annals of the Carnegie Museum', 1],
    ['Annals of the Durban Museum', 2],
    ['Annals of the Natal Museum', 2],
    ['Annals of the South African Museum', 12],
    ['Annals of the Transvaal Museum', 3],
    ['Archiv für Naturgeschichte', 10],
    ['L\'Institute, Journal Général des Sociétés et Travaux Scientifiques de la France et de l\'Étranger', 2],
    ['L. Friederischen & Co.', 2],
    ['Mitteilungen aus dem Naturhistorischen Museum in Hamburg', 10],
    ['Novitates zoologicae', 2],
    ['Proceedings of the Zoological Society of London', 2],
    ['Schniebes', 3],
    ['Zootaxa', 8],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=84)',
    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);