function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adansonia', 3],
    ['Blumea - Biodiversity, Evolution and Biogeography of Plants', 3],
    ['Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie.', 18],
    ['Candollea', 16],
    ['Denkschriften der Kaiserlichen Akademie der Wissenschaften, Wien. Mathematisch-Naturwissenschaftliche Klasse', 3],
    ['J. Cramer', 2],
    ['Laurentius Salvius', 17],
    ['Nova Guinea. Contributions to the anthropology, botany, geology and zoology of the Papuan region. Botany', 7],
    ['Order out of Chaos. Linnaean Plant Types and their Types', 22],
    ['Palaeoentomology', 2],
    ['Papéis Avulsos de Zoologia', 8],
    ['PhytoKeys', 30],
    ['Phytotaxa', 20],
    ['Taylor & Francis', 3],
    ['Zootaxa', 7],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=164)',
    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);