function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Museum Novitates', 1],
    ['Bol. Biol. Sao Paulo', 1],
    ['Check List', 2],
    ['Comunicaço {~ es do Museu de Ciências PUCRS, Sér. Zool. Porto Alegre', 4],
    ['Copeia', 1],
    ['Ichthyological Exploration of Freshwaters', 4],
    ['Kosmos, Rio de Janeiro [Rev. Art. Sci. Litt.]', 1],
    ['Neotropical Ichthyology', 3],
    ['University of Kentucky', 1],
    ['ZooKeys', 2],
    ['Zoologische Mededelingen, Leiden', 2],
    ['Zoosystema', 1],
    ['Zootaxa', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=31)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);