function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 345],
    ['Biodiversity Data Journal', 188],
    ['Birkhaeuser Verlag', 85],
    ['Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie.', 161],
    ['Bulletin du Jardin Botanique de Buitenzorg, Série 2', 81],
    ['Flora Europaea, Vol 5: Alismataceae to Orchidaceae', 236],
    ['Flora Helvetica', 81],
    ['Flora der Schweiz und angrenzender Gebiete. Band 1: Pteridophyta bis Caryophyllaceae', 83],
    ['Info Flora Schweiz', 132],
    ['J. Cramer', 87],
    ['Notizblatt des Königlichen Botanischen Gartens und Museums zu Berlin', 145],
    ['Nova Guinea. Contributions to the anthropology, botany, geology and zoology of the Papuan region. Botany', 135],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 115],
    ['PhytoKeys', 208],
    ['Phytotaxa', 2762],
    ['Other (93)', 914]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=5758)',
    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);