function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 5416],
    ['Biodiversity Data Journal', 5789],
    ['Birkhaeuser Verlag', 4098],
    ['Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie.', 1167],
    ['Candollea', 2164],
    ['Denkschriften der Schweizerischen Naturforschenden Gesellschaft', 2648],
    ['European Journal of Taxonomy', 1253],
    ['Flora Helvetica', 3366],
    ['Info Flora Schweiz', 4788],
    ['Laurentius Salvius', 2983],
    ['Linzer biologische Beiträge', 1102],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 8927],
    ['PhytoKeys', 8698],
    ['Phytotaxa', 19061],
    ['Zootaxa', 2037],
    ['Other (490)', 14525]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=88022)',
    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);