function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anales de la Sociedad Española de Historia Natural', 1],
    ['Annals of the Carnegie Museum', 1],
    ['Boletim do Museu Municipal do Funchal', 2],
    ['Bulletin Acad. R. Belge, Cl. Sci., 5', 1],
    ['Bulletin de la Société Philomathique de Paris, Série 7', 1],
    ['E. J. Brill', 1],
    ['European Journal of Taxonomy', 8],
    ['Immunological Reviews', 2],
    ['Memoirs of the Carnegie Museum', 1],
    ['Osservationes Peloritani', 1],
    ['Pacific Science', 1],
    ['Proceedings of the Zoological Society of London, B', 3],
    ['Report of the Fisheries and Marine Biological Survey, Union of South Africa', 2],
    ['Voprosy Ikhtiologii', 2],
    ['Zootaxa', 23],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=56)',
    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);