function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 2', 2],
    ['Bulletin of Marine Science', 4],
    ['Bulletin of the United States National Museum', 2],
    ['Copeia', 2],
    ['F. Schoell', 2],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 3],
    ['Nouvelles Archives du Muséum d\'Histoire Naturelle, Paris, Série 2', 2],
    ['Occasional Papers of the California Academy of Sciences', 2],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 2],
    ['Proceedings of the California Academy of Sciences, Series 4', 4],
    ['Proceedings of the United States National Museum, 3', 3],
    ['Proceedings of the Zoological Society of London, B', 2],
    ['Special Bulletin of the United States National Museum', 2],
    ['Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen', 2],
    ['Vet. Acad. Nya Handl., Stockholm', 2],
    ['Other (31)', 32]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=68)',
    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);