function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 2],
    ['Algemeene Konst- en Letter-Bode', 1],
    ['Anales de la Sociedad Española de Historia Natural', 1],
    ['Annalen des K. K. Naturhistorischen Hofmuseums in Wien', 1],
    ['Annals of the Queensland Museum', 1],
    ['Boston Journal of Natural History', 1],
    ['Bulletin Inst. Fondam. Afr. Noire Sci. Nat., A', 1],
    ['Geodiversitas', 1],
    ['Memoirs of the Museum of Comparative Zoology, at Harvard College', 1],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 1],
    ['Veit', 6],
    ['Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen', 6],
    ['Zoosystematics and Evolution', 1],
    ['Zootaxa', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=32)',
    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);