function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Entomologica Musei Nationalis Pragae', 5],
    ['Annali del Museo Civico di Storia Naturale \' Giacomo Doria\'', 1],
    ['Beiträge Zur Entomologie = Contributions to Entomology', 4],
    ['Bollettino della Società Entomologica Italiana', 1],
    ['Bulletin de la Société Impériale des Naturalistes de Moscou', 1],
    ['Insecta mundi', 2],
    ['Linzer biologische Beiträge', 3],
    ['Memorie della Società Entomologica Italiana', 1],
    ['Neuestes Magazin für die Liebhaber der Entomologie / Schneider', 1],
    ['New Zealand Institute', 1],
    ['Revue suisse de Zoologie', 1],
    ['Species Diversity', 21],
    ['Transactions of the Entomological Society of New South Wales', 2],
    ['ZooKeys', 7],
    ['Zootaxa', 22],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=74)',
    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);