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', 2],
    ['Biodiversity Data Journal', 4],
    ['Birkhaeuser Verlag', 2],
    ['Bulletin of the National Science Museum, Series A (Zoology)', 7],
    ['European Journal of Taxonomy', 6],
    ['Geodiversitas', 1],
    ['Journal de Conchyliologie', 1],
    ['Journal of Conchology', 1],
    ['Journal of Natural History', 2],
    ['Veliger', 3],
    ['ZooKeys', 11],
    ['Zoosystema', 9],
    ['Zoosystematics and Evolution', 4],
    ['Zootaxa', 82],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=141)',
    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);