function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 2],
    ['Biodiversity Data Journal', 1],
    ['British Museum', 1],
    ['Crustaceana', 1],
    ['Edinburgh encyclopaedia, conducted by David Brewster', 2],
    ['Journal of Natural History', 26],
    ['Journal of Species Research', 4],
    ['Korean Journal of Zoology', 2],
    ['Marine Biodiversity Records', 3],
    ['Pacific insects', 2],
    ['Proceedings of the Biological Society of Washington', 3],
    ['Records of the Australian Museum', 9],
    ['Smithson Contrib Zool', 2],
    ['ZooKeys', 11],
    ['Zootaxa', 205],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=278)',
    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);