function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 4],
    ['Annals of Natural History; or, Magazine of Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany and Zoo', 2],
    ['Archiv für Molluskenkunde', 6],
    ['Biodiversity Data Journal', 7],
    ['European Journal of Taxonomy', 9],
    ['Geological Survey Professional Paper', 1],
    ['Iberus: Revista de la Sociedad Española de Malacología', 1],
    ['Papéis Avulsos de Zoologia, Sao Paulo', 1],
    ['Raffles Bulletin of Zoology', 1],
    ['Records of the Zoological Survey of India', 1],
    ['Visaya', 7],
    ['ZooKeys', 6],
    ['Zoological Journal of the Linnean Society', 3],
    ['Zoosystematics and Evolution', 8],
    ['Zootaxa', 9],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=67)',
    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);