function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 158],
    ['Biodiversity Data Journal', 331],
    ['Birkhaeuser Verlag', 74],
    ['Blumea - Biodiversity, Evolution and Biogeography of Plants', 91],
    ['Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie.', 48],
    ['Candollea', 50],
    ['Check List', 84],
    ['Denkschriften der Schweizerischen Naturforschenden Gesellschaft', 49],
    ['Flora Helvetica', 55],
    ['Flora Malesiana, Series 2', 40],
    ['Info Flora Schweiz', 79],
    ['Linzer biologische Beiträge', 49],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 188],
    ['PhytoKeys', 348],
    ['Phytotaxa', 868],
    ['Other (52)', 317]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2829)',
    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);