function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft', 1],
    ['African Invertebrates', 2],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 4],
    ['Biodiversity Data Journal', 3],
    ['Boletin de la Sociedad Entomológica Aragonesa', 3],
    ['European Journal of Taxonomy', 40],
    ['Journal of Natural History', 85],
    ['Journal of arachnology', 4],
    ['Raffles Bulletin of Zoology', 4],
    ['Revista Ibérica de Aracnología', 2],
    ['ZooKeys', 165],
    ['Zoological Journal of the Linnean Society', 21],
    ['Zoological Systematics', 2],
    ['Zoosystema', 6],
    ['Zootaxa', 227],
    ['Other (9)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=578)',
    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);