function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arthropod Systematics & amp; Phylogeny', 5],
    ['Caucasian Entomological Bulletin', 1],
    ['Deutsche Entomologische Zeitschrift', 56],
    ['J. Zool. Syst. Evol. Research', 1],
    ['Laurentius Salvius', 2],
    ['Linzer biologische Beiträge', 2],
    ['Psyche', 2],
    ['Siegfried Lebrecht Crusius', 1],
    ['Typis Hæredum Widmanstadii', 1],
    ['ZooKeys', 12],
    ['Zoological Systematics', 13],
    ['Zoosystema', 5],
    ['Zootaxa', 89]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=190)',
    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);