function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. F. Rose', 1],
    ['Annale van die Suid-Afrikaanse Museum [Annals of the South African Museum]', 1],
    ['Archiv für Naturgeschichte', 1],
    ['Bulletin de l\'Institut Royal des Sciences Naturelles de Belgique', 1],
    ['Bulletin de la Societe d\'Histoire Naturelle de Toulouse', 1],
    ['Bulletin des Sciences Naturelles et de Géologie, Série 2', 1],
    ['Calcutta Journal of Natural History, and Miscellany of the Arts and Sciences in India', 1],
    ['European Journal of Taxonomy', 1],
    ['Förh. Skand. Naturf.', 1],
    ['Handl. K. Vetensk. K.', 1],
    ['Laurentius Salvius', 9],
    ['Report on the Scientific Results of the Voyage of H. M. S. “ Challenger ” during the Years 1873 - 76 under the Command of Captai', 3],
    ['Sanfilippo', 2],
    ['Transactions of the Literary and Philosophical Society of New York', 2],
    ['Zootaxa', 3],
    ['Other (10)', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=39)',
    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);