function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Societatis Regiae Scientiarum Indo-Neêrlandicae', 1],
    ['Bulletin of the Bingham Oceanographic Collection Yale University', 3],
    ['European Journal of Taxonomy', 1],
    ['Kosmos, Rio de Janeiro [Rev. Art. Sci. Litt.]', 1],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 1],
    ['Proceedings of the Linnean Society of New South Wales', 1],
    ['Proceedings of the United States National Museum, 3', 2],
    ['Repertorio Fisico-Natural de la Isla de Cuba', 1],
    ['Report of the United States Commissioner of Fish and Fisheries', 1],
    ['Year book of the Carnegie Institution of Washington', 1],
    ['Zootaxa', 10],
    ['“ Meteor ” Forschungsergebnisse, D', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=24)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);