function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arthropod Systematics & amp; Phylogeny', 6],
    ['Bollettino del Laboratorio di Zoologia Generale ed Agraria del R. Scuola d\'Agricultura di Portici', 7],
    ['European Journal of Taxonomy', 20],
    ['Insect Systematics & Evolution', 13],
    ['Journal of Natural History', 22],
    ['Laurentius Salvius', 11],
    ['Mitteilungen aus dem Naturhistorischen Museum in Hamburg', 4],
    ['Pacific insects', 5],
    ['Proceedings of the Hawaiian Entomological Society', 6],
    ['Subterranean Biology', 11],
    ['Transactions of the Entomological Society of London', 8],
    ['ZooKeys', 104],
    ['Zoosystema', 130],
    ['Zootaxa', 2097],
    ['Öfversigt af Konglelige Vetenskaps-Akademiens Förhandlingar', 12],
    ['Other (44)', 59]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2515)',
    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);