function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales de la Société Entomologique de France, Séries 1 - 6', 1],
    ['Atti Soc Ital Mus Civ Milano', 1],
    ['Azzolino', 1],
    ['Can Ent', 1],
    ['Canadian entomologist', 2],
    ['Entomologist', 3],
    ['F. Fernandes', 1],
    ['Indian Mus Notes', 1],
    ['Journal Trinidad Naturalists Club', 1],
    ['Memorie della Societá Italiana di Sienze Naturali', 1],
    ['Proceedings of the California Academy of Sciences, Series 3, Zoology', 2],
    ['Trans Proc N Z Inst', 3],
    ['Transactions and proceedings of the New Zealand Institute', 5],
    ['Zoosystema', 2],
    ['Zootaxa', 20],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=48)',
    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);