function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 2],
    ['Algemeene Konst- en Letter-Bode', 1],
    ['Annale van die Suid-Afrikaanse Museum [Annals of the South African Museum]', 1],
    ['Annales de la Société Impériale d\'Agriculture, Histoire Naturelle de Lyon', 2],
    ['Annales des Sciences Naturelles, Zoologie, Série 4', 4],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 1],
    ['Biblioteca de Clasicos Cubanos', 2],
    ['Ezhegodnik Zoologicheskogo Muzeya Imperatorskogo Akademii Nauk', 2],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 6],
    ['Novi Commentarii Academiae Scientiarum Instituti Bononiensis', 3],
    ['Proceedings of the Linnean Society of New South Wales', 6],
    ['Proceedings of the Zoological Acclimatisation Society of Victoria', 3],
    ['Proceedings of the Zoological Society of London, B', 2],
    ['Transactions of the American Philosophical Society', 4],
    ['Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen', 3],
    ['Other (16)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=58)',
    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);