function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 1],
    ['Biodiversity Data Journal', 1],
    ['Boll Mus Zool Univ Torino', 1],
    ['Carolum Reichard', 1],
    ['Diptera Sveciae', 12],
    ['Dipteron', 13],
    ['Entomological news', 1],
    ['Fragmenta entomologica', 2],
    ['Journal of Natural History', 1],
    ['Linzer biologische Beiträge', 3],
    ['Magazin fu ̈ r insektenkunde / herausgegeben von Karl Illiger', 1],
    ['Mémoires Présentés par Divers Savans à l\'Académie Royale des Sciences de l\'Institut de France, et Imprimés par son Ordre', 1],
    ['Vestnik Zoologii', 15],
    ['Zoosystema', 13],
    ['Zootaxa', 215],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=283)',
    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);