function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. F. Rose', 8],
    ['Annale van die Suid-Afrikaanse Museum [Annals of the South African Museum]', 5],
    ['European Journal of Taxonomy', 32],
    ['F. Schoell', 4],
    ['Journal of Natural History', 11],
    ['Laurentius Salvius', 23],
    ['Notulae Naturae', 3],
    ['Phytotaxa', 22],
    ['Proceedings of the United States National Museum, 3', 4],
    ['Report of the British Association for the Advancement of Science', 3],
    ['Sanderiano Commissum', 3],
    ['Sanfilippo', 8],
    ['Transactions of the Royal Society of South Africa.', 5],
    ['Verhandelingen van de Hollandse Maatschappij van Wetenschappen, Haarlem', 6],
    ['Zootaxa', 128],
    ['Other (61)', 75]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=340)',
    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);