function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 1],
    ['Arthropod systematics & phylogeny', 1],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 1],
    ['Biodiversity Data Journal', 1],
    ['Deutsche Entomologische Zeitschrift', 11],
    ['Far Eastern Entomologist', 6],
    ['Fragmenta Faunistica', 1],
    ['Journal N Y Ent Soc', 1],
    ['Linzer biologische Beiträge', 21],
    ['Nova Acta Científica Compostelana (Bioloxía)', 8],
    ['Tijdschrift voor Entomologie', 16],
    ['Transactions of the American Entomological Society', 1],
    ['Zootaxa', 375]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=444)',
    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);