function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anales de la Escuela Nacional de Ciencias Biologicas', 1],
    ['Annotationes Zoologicae Japonenses', 1],
    ['Archiv für Naturgeschichte', 2],
    ['Beverley Tucker', 3],
    ['Biodiversity Data Journal', 2],
    ['Canadian Journal of Zoology', 3],
    ['Copeia', 2],
    ['Dnevn. Zool. Otd. Obsc. Liub. Jest. Moskva', 2],
    ['European Journal of Taxonomy', 31],
    ['Geodiversitas', 3],
    ['Journal of the Fisheries Research Board of Canada', 2],
    ['Laurentius Salvius', 4],
    ['Miscellaneous Publications of the Museum of Zoology University of Michigan', 2],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 2],
    ['Zootaxa', 15],
    ['Other (12)', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=87)',
    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);