function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annali del Museo Civico di Storia Naturale di Genova', 2],
    ['Biodiversity Data Journal', 31],
    ['Bulletin de la Société Impériale des Naturalistes de Moscou', 6],
    ['Calodema', 1],
    ['Dictionnaire des Sciences Naturelles', 1],
    ['Far Eastern Entomologist', 1],
    ['Insecta Mundi', 1],
    ['Journal of Natural History', 3],
    ['Mitteilungen über Höhlen- und Karstforschung', 1],
    ['Raffles Bulletin of Zoology', 24],
    ['Revue suisse de Zoologie', 5],
    ['Subterranean Biology', 9],
    ['ZooKeys', 27],
    ['Zoosystema', 9],
    ['Zootaxa', 76],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=198)',
    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);