function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 314],
    ['Biodiversity Data Journal', 18],
    ['Blumea', 36],
    ['Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie.', 5],
    ['Bulletin du Départment de L\'Agriculture aux Indes Néerlandaises', 4],
    ['Edinburgh Journal of Botany', 9],
    ['European Journal of Taxonomy', 22],
    ['Insecta Mundi', 5],
    ['Laurentius Salvius', 19],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 26],
    ['PhytoKeys', 74],
    ['Phytotaxa', 99],
    ['Plant Ecology and Evolution', 10],
    ['Zoosystema', 5],
    ['Zootaxa', 23],
    ['Other (16)', 33]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=702)',
    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);