function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 556],
    ['Archiv für Molluskenkunde', 901],
    ['Biodiversity Data Journal', 3208],
    ['Cryptogamie, Bryologie', 733],
    ['European Journal of Taxonomy', 2867],
    ['Geodiversitas', 1533],
    ['International Journal of Systematic and Evolutionary Microbiology', 666],
    ['Journal of Natural History', 1826],
    ['Laurentius Salvius', 724],
    ['Phytotaxa', 1622],
    ['Visaya', 649],
    ['ZooKeys', 7390],
    ['Zoological Journal of the Linnean Society', 1439],
    ['Zoosystema', 2153],
    ['Zootaxa', 23462],
    ['Other (1386)', 21574]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=71303)',
    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);