function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Museum Novitates', 1],
    ['Annals of the Carnegie Museum', 2],
    ['Anzeiger', 1],
    ['Arquivos de Zoologia, São Paulo', 1],
    ['Bulletin de la Société Philomathique de Paris, Série 7', 1],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 2', 1],
    ['Check List', 5],
    ['Copeia', 5],
    ['Denkschriften der Kaiserlichen Akademie der Wissenschaften, Wien', 1],
    ['Journal of the Washington Academy of Sciences', 2],
    ['Neotropical Ichthyology', 13],
    ['Pap. Avulsos Dep. Zool., São Paulo', 1],
    ['Proceedings of the Academy of Natural Sciences of Philadelphia', 2],
    ['Revista Brasileira de Biologia', 3],
    ['Zootaxa', 7],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=50)',
    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);