function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biodiversity Data Journal', 115],
    ['Bulletin de la Societe Vaudoise des Sciences Naturelles', 10],
    ['Bulletin du Muséum National d’Histoire Naturelle, Série 4, Section A, Zoologie, Biologie et Écologie d’Animal', 8],
    ['Ecologica Montenegrina', 6],
    ['European Journal of Taxonomy', 176],
    ['Journal of Natural History', 135],
    ['Journal of Threatened Taxa', 10],
    ['Nematologica', 15],
    ['Nematology', 27],
    ['Species Diversity', 17],
    ['Systematic Parasitology', 6],
    ['Transactions of the Linnean Society of London', 11],
    ['ZooKeys', 10],
    ['Zoological Journal of the Linnean Society', 27],
    ['Zootaxa', 867],
    ['Other (22)', 37]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1477)',
    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);