function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abhandlungen der Böhmischen. Gesellschaft der Wissenschaften', 1],
    ['Annales de la Société des Lettres et Arts des Alpes-Maritimes', 1],
    ['Bulletin de la Société Zoologique de France', 1],
    ['Bulletin of the Japanese Society of Scientific Fisheries', 1],
    ['Cybium', 2],
    ['European Journal of Taxonomy', 6],
    ['K. Danske Vidensk. Selsk. Naturvid. Math. Afhandl.', 1],
    ['Marine Investigations in South Africa', 1],
    ['Memorie della Accademia delle Scienze di Torino, Classe die Scienze Fisiche, Matematuche e Naturali Torino., Serie 2', 2],
    ['Nature', 1],
    ['Proceedings of the United States National Museum, 3', 1],
    ['Transactions of the Royal Society of New Zealand', 1],
    ['Voprosy Ikhtiologii', 1],
    ['Zootaxa', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);