function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. F. Rose', 3],
    ['Anales de la Universidad de Chile, Memorias Cientificas y Literarias', 8],
    ['Atti. Accad. Sci. Napoli', 2],
    ['Bulletin of the United States Fish Commission', 2],
    ['Copeia', 3],
    ['European Journal of Taxonomy', 3],
    ['F. Schoell', 3],
    ['J. C. Koppe', 2],
    ['Jahrbücher des Nassauischen Vereins für Naturkunde in Wiesbaden', 2],
    ['Laurentius Salvius', 15],
    ['Panckoucke', 3],
    ['Schmerber', 5],
    ['Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien', 3],
    ['Zoosystematics and Evolution', 6],
    ['Zootaxa', 39],
    ['Other (35)', 39]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=138)',
    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);