function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annale van die Suid-Afrikaanse Museum [Annals of the South African Museum]', 1],
    ['Annales de l\'Institut Océanographique, Nouvelle Serie', 1],
    ['Annals of the Carnegie Museum', 1],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 2', 1],
    ['Bulletin of the United States Fish Commission', 1],
    ['E. J. Brill', 2],
    ['Jornal de Sciencias Mathematicas, Physicas e Naturaes', 1],
    ['Monatsberichte der Akademie der Wissenschaft zu Berlin', 2],
    ['Natuurkundige Verhandelingen van de Hollandsche Maatschappij der Wetenschappen te Haarlem, Series 2', 1],
    ['Notes from the Leyden Museum', 1],
    ['Proceedings of the United States National Museum, 3', 2],
    ['Sci. Reports, John Murray Exped.', 1],
    ['Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaften Classe', 1],
    ['The Journal of the College of Science, Imperial University of Tokyo', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=17)',
    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);