function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Algemeene Konst- en Letter-Bode', 1],
    ['Anales de la Universidad de Chile, Memorias Cientificas y Literarias', 1],
    ['Annales de la Société Impériale d\'Agriculture, Histoire Naturelle de Lyon', 1],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 1],
    ['Anzeiger', 3],
    ['Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano', 1],
    ['Biodiversity Data Journal', 2],
    ['Bulletin de la Société Philomathique de Paris, Série 7', 1],
    ['Bulletin of Marine Science', 2],
    ['Journal of Natural History', 2],
    ['Journal of the Academy of Natural Sciences of Philadelphia', 2],
    ['Journal of the Bombay Natural History Society', 2],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 4],
    ['Transactions of the Royal Society of South Africa.', 2],
    ['Zootaxa', 6],
    ['Other (16)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=47)',
    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);