function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 22],
    ['Bijdragen tot de Flora van Nederlandsch Indie', 2],
    ['Biodiversity Data Journal', 10],
    ['Blumea - Biodiversity, Evolution and Biogeography of Plants', 8],
    ['Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie.', 4],
    ['Brittonia', 7],
    ['Check List', 3],
    ['Kew Bulletin', 19],
    ['Notizblatt des Königlichen Botanischen Gartens und Museums zu Berlin', 6],
    ['Nova Guinea. Contributions to the anthropology, botany, geology and zoology of the Papuan region. Botany', 2],
    ['Occasional Papers of the Bernice P. Bishop Museum', 4],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 4],
    ['Philippine Journal of Science C. Botany, Section C, Botany', 4],
    ['Phytotaxa', 122],
    ['Zoosystema', 5],
    ['Other (13)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=236)',
    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);