function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Academy of Natural Sciences', 4],
    ['Archiv für Molluskenkunde', 1],
    ['Bulletins de la Société Malacologique de France', 1],
    ['F. A. Brockhaus', 1],
    ['Journal de Conchyliologie', 4],
    ['Occasional Papers of the Bernice P. Bishop Museum', 1],
    ['Proceedings of the Zoological Society of London', 2],
    ['The Journal of Malacology', 2],
    ['University Press', 5],
    ['Zoosystema', 1],
    ['Zootaxa', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=27)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);