function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 7],
    ['Amurian Zoological Journal', 2],
    ['Annalen des Naturhistorischen Museums in Wien, Serie A Mineralogie und Petrographie Geologie und Palaeontologie Anthropologie un', 1],
    ['Archiv für Molluskenkunde', 1],
    ['Archives du Muséum d\'Histoire Naturelle de Lyon', 1],
    ['Australian zoologist', 1],
    ['Ecologica Montenegrina', 2],
    ['Heineck et Faber', 4],
    ['Journal of Natural History', 5],
    ['Linzer biologische Beiträge', 13],
    ['Paläontologische Zeitschrift', 4],
    ['Revue suisse de Zoologie', 4],
    ['Vestnik Zoologii', 14],
    ['ZooKeys', 124],
    ['Zootaxa', 33],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=220)',
    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);