function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annalen des Naturhistorischen Museums in Wien, Serie A Mineralogie und Petrographie Geologie und Palaeontologie Anthropologie un', 2],
    ['Archiv für Molluskenkunde', 38],
    ['Conchbooks', 3],
    ['Ecologica Montenegrina', 43],
    ['European Journal of Taxonomy', 77],
    ['Geodiversitas', 3],
    ['Journal of Molluscan Studies', 5],
    ['Journal of Natural History', 41],
    ['Ruthenica, Russian Malacological Journal', 5],
    ['Subterranean Biology', 11],
    ['Zitteliana', 24],
    ['ZooKeys', 197],
    ['Zoological Journal of the Linnean Society', 23],
    ['Zoosystema', 12],
    ['Zootaxa', 151],
    ['Other (13)', 16]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=651)',
    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);