function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 45],
    ['Annals of Botany', 103],
    ['Biodiversity Data Journal', 109],
    ['Birkhaeuser Verlag', 236],
    ['Denkschriften der Schweizerischen Naturforschenden Gesellschaft', 276],
    ['European Journal of Taxonomy', 38],
    ['Flora Europaea, Volume 2, Rosaceae to Umbelliferae', 62],
    ['Flora Helvetica', 177],
    ['Info Flora Schweiz', 387],
    ['Insecta Mundi', 38],
    ['Laurentius Salvius', 156],
    ['Linzer biologische Beiträge', 56],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 208],
    ['PhytoKeys', 175],
    ['Phytotaxa', 270],
    ['Other (29)', 141]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2477)',
    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);