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 ', 1],
    ['Australian zoologist', 1],
    ['Biodiversity Data Journal', 4],
    ['Bishop Museum Bulletin in Entomology', 3],
    ['Bulletin of the British Museum (Natural History). Entomology', 1],
    ['Far Eastern Entomologist', 1],
    ['General and applied entomology', 1],
    ['Journal of the Royal Society of New Zealand', 1],
    ['Memoirs of Museum Victoria', 2],
    ['Papéis Avulsos de Zoologia', 1],
    ['Proceedings of the Royal Entomological Society of London, Series B, Taxonomy', 4],
    ['Records of the Australian Museum', 3],
    ['Records of the Canterbury Museum', 1],
    ['Russian Entomological Journal', 1],
    ['Zootaxa', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=31)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);