function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anales de la Escuela Nacional de Ciencias Biologicas', 1],
    ['Arquivos do Museu Nacional Rio de Janeiro', 1],
    ['Bulletin of the Southern California Academy of Sciences', 1],
    ['Check List', 2],
    ['European Journal of Taxonomy', 2],
    ['Japanese Journal of Ichthyology', 2],
    ['Journal of Natural History', 2],
    ['Journal of the Marine Biological Association of India', 1],
    ['Natuurkunde Tijdschrift voor Nederlandsche-Indië', 1],
    ['Papéis Avulsos de Zoologia', 1],
    ['Philippine Journal of Science, Section D', 1],
    ['Proceedings of the Biological Society of Washington', 1],
    ['Species Diversity', 3],
    ['Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen', 1],
    ['Zootaxa', 16],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=38)',
    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);