function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 5443],
    ['Biodiversity Data Journal', 4447],
    ['Birkhaeuser Verlag', 4093],
    ['Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie.', 1125],
    ['Candollea', 1932],
    ['Denkschriften der Schweizerischen Naturforschenden Gesellschaft', 2648],
    ['European Journal of Taxonomy', 1190],
    ['Flora Helvetica', 3366],
    ['Info Flora Schweiz', 4750],
    ['Laurentius Salvius', 2983],
    ['Linzer biologische Beiträge', 1087],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 8612],
    ['PhytoKeys', 7718],
    ['Phytotaxa', 17296],
    ['Zootaxa', 1913],
    ['Other (410)', 13128]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=81731)',
    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);