function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annales Societe Entomologique France', 6],
    ['Biodiversity Data Journal', 10],
    ['Entomo Helvetica', 1],
    ['Fragmenta entomologica', 2],
    ['Insecta matsumurana', 1],
    ['Linzer biologische Beiträge', 2],
    ['Miscellanea Zoologica Sumatrana', 7],
    ['Mémoires du Muséum national d\'Histoire naturelle', 12],
    ['Odonatologica', 4],
    ['Oriental Insects', 4],
    ['Proceedings of the Royal Entomological Society of London', 7],
    ['Proceedings of the Zoological Society of London', 1],
    ['Records of the Indian Museum', 2],
    ['Transactions of the Entomological Society of London', 6],
    ['Zootaxa', 7],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=73)',
    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);