function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annals and Magazine of Natural History', 13],
    ['Biodiversity Data Journal', 37],
    ['Bulletin de la Societe Vaudoise des Sciences Naturelles', 10],
    ['Capita Zoologica', 13],
    ['European Journal of Taxonomy', 14],
    ['Fundam. appl. Nematol.', 4],
    ['Journal of Natural History', 25],
    ['Journal of Plant Protection', 3],
    ['Khumbu Himal', 3],
    ['Meddelelser om Gronland', 5],
    ['Nematologica', 15],
    ['Nematology', 24],
    ['Pakistan Journal of Nematology', 4],
    ['ZooKeys', 3],
    ['Zootaxa', 36],
    ['Other (6)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=216)',
    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);