function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['American Museum Novitates', 1],
    ['Arquivos de Zoologia, São Paulo', 4],
    ['Bol. Biol. Sao Paulo', 1],
    ['Check List', 2],
    ['Copeia', 2],
    ['Ichthyological Exploration of Freshwaters', 1],
    ['Naturalia, Sao Paulo', 3],
    ['Neotropical Ichthyol.', 1],
    ['Neotropical Ichthyology', 14],
    ['Occasional Papers of the California Academy of Sciences', 1],
    ['Proc. K. Ned. Akad. Wet., C, Zool.', 1],
    ['Proceedings of the American Philosophical Society', 2],
    ['Proceedings of the Biological Society of Washington', 1],
    ['ZooKeys', 4],
    ['Zootaxa', 21],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=60)',
    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);