function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Zoologica Academiae Scientiarum Hungaricae', 1],
    ['Annalen des Naturhistorischen Museums in Wien, Serie A Mineralogie und Petrographie Geologie und Palaeontologie Anthropologie un', 1],
    ['Archiv für Molluskenkunde', 10],
    ['Conchbooks', 3],
    ['Ecologica Montenegrina', 9],
    ['Journal of Molluscan Studies', 2],
    ['Journal of Natural History', 6],
    ['Turkish Journal of Zoology', 1],
    ['ZooKeys', 12],
    ['Zoological Journal of the Linnean Society', 7],
    ['Zoology in the Middle East', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=54)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);