function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de la Société Royale Zoologique de Belgique', 2],
    ['Annals of the Cape Provincial Museums Natural History', 2],
    ['Annals of the Natal Museum', 1],
    ['Annals of the Transvaal Museum', 1],
    ['Archiv fuer Hydrobiologie', 2],
    ['Arq. Mus. Bocage Lisboa, A', 1],
    ['Bulletin du Musée Royal d\'Histoire Naturelle de Belgique', 1],
    ['Cat. I. F. A. N.', 1],
    ['Comptes Rendu Soc. Philomat. Paris, 8', 1],
    ['Copeia', 9],
    ['Journal of African zoology', 2],
    ['Mem. Inst. Franc. Afr. Noire', 1],
    ['Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut', 1],
    ['Proceedings of the California Academy of Sciences, Series 4', 4],
    ['Zootaxa', 12],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=49)',
    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);