function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 28],
    ['Bijdragen tot de Flora van Nederlandsch Indie', 11],
    ['Biodiversity Data Journal', 10],
    ['Blumea - Biodiversity, Evolution and Biogeography of Plants', 19],
    ['Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie.', 26],
    ['European Journal of Taxonomy', 6],
    ['Gardens\' Bulletin (Singapore)', 40],
    ['Harvard Papers in Botany', 5],
    ['Insecta Mundi', 4],
    ['Journal of the Arnold Arboretum', 6],
    ['Mémoires du Muséum national d\'Histoire naturelle', 28],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 14],
    ['PhytoKeys', 7],
    ['Phytologia', 13],
    ['Phytotaxa', 28],
    ['Other (15)', 26]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=271)',
    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);