function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Academiae Medicinae Zunyi', 1],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 4],
    ['Asiatic Researches', 8],
    ['Calcutta Journal of Natural History, and Miscellany of the Arts and Sciences in India', 1],
    ['Copeia', 1],
    ['Journal Pan-Pac. Res. Inst.', 1],
    ['Journal and Proceedings of the Asiatic Society of Bengal', 1],
    ['Journal of the Siam Society Natural History, Supplement', 1],
    ['Madras Journal of Literature and Science', 1],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 5],
    ['Natuurkundige Verhandelingen van de Hollandsche Maatschappij der Wetenschappen te Haarlem, Series 2', 2],
    ['Nederlandsch Tijdschrift voor de Dierkunde', 1],
    ['Philippine Journal of Science, Section D', 10],
    ['Proceedings of the Zoological Society of London, B', 8],
    ['Zootaxa', 3],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=50)',
    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);