function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 17],
    ['Adansonia: Recueil d\'Observations Botaniques', 2],
    ['Annales Générales des Sciences Physiques', 3],
    ['Annales du Jardin Botanique de Buitenzorg.', 3],
    ['Australian Systematic Botany', 2],
    ['Blumea - Biodiversity, Evolution and Biogeography of Plants', 1],
    ['Botanical Magazine Tokyo', 2],
    ['Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie.', 5],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 4, Section B, Adansonia, Botanique, Phytochimie', 1],
    ['Candollea', 12],
    ['Contributions from Herbarium Australiense', 7],
    ['Journal of the Arnold Arboretum', 25],
    ['Pacific Science', 23],
    ['Phytotaxa', 3],
    ['Webbia - Journal of Plant Taxonomy and Geography', 4],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=117)',
    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);