function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['African Invertebrates', 54],
    ['Archiv für Molluskenkunde', 75],
    ['Biodiversity Data Journal', 67],
    ['Ecologica Montenegrina', 64],
    ['European Journal of Taxonomy', 151],
    ['Geodiversitas', 93],
    ['Iberus: Revista de la Sociedad Española de Malacología', 80],
    ['Journal of Natural History', 125],
    ['Laurentius Salvius', 66],
    ['Subterranean Biology', 72],
    ['Visaya', 111],
    ['ZooKeys', 365],
    ['Zoological Journal of the Linnean Society', 79],
    ['Zoosystema', 124],
    ['Zootaxa', 1021],
    ['Other (93)', 458]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=3005)',
    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);