function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bulletin of the American Museum of Natural History', 1],
    ['Bulletin of the Bingham Oceanographic Collection Yale University', 1],
    ['Bulletin of the United States Bureau of Fisheries', 3],
    ['Laurentii Salvii', 1],
    ['Memoirs of the Carnegie Museum', 1],
    ['Memoirs of the Queensland Museum', 1],
    ['Natuurkundige Verhandelingen van de Hollandsche Maatschappij der Wetenschappen te Haarlem, Series 3', 1],
    ['Nederlandsch Tijdschrift voor de Dierkunde', 1],
    ['Philippine Journal of Science, Section D', 1],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 5],
    ['Proceedings of the Boston Society of Natural History', 1],
    ['Proceedings of the Royal Society of Queensland', 1],
    ['Proceedings of the United States National Museum, 3', 12],
    ['Repertorio Fisico-Natural de la Isla de Cuba', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=31)',
    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);