function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. Bertrand', 2],
    ['American Journal of Conchology', 1],
    ['Annalen des Naturhistorischen Museums in Wien, Serie A Mineralogie und Petrographie Geologie und Palaeontologie Anthropologie un', 1],
    ['Archiv für Molluskenkunde', 2],
    ['Archiv für Naturgeschichte', 1],
    ['Archives du Muséum d\'Histoire Naturelle de Lyon', 1],
    ['Heineck et Faber', 4],
    ['Molluscan research', 3],
    ['Palaeontographica, Abteilung A-Palaozoologie-Stratigraphie', 2],
    ['Paläontologische Zeitschrift', 4],
    ['University Press', 2],
    ['Zitteliana', 4],
    ['ZooKeys', 65],
    ['Zoosystematics and Evolution', 41],
    ['Zootaxa', 70],
    ['Other (13)', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=216)',
    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);