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],
    ['Benjamin White and Son', 1],
    ['Biodiversity Data Journal', 1],
    ['Biodiversity and Natural History', 1],
    ['Bulletin of the American Museum of Natural History', 3],
    ['Hallageriis', 6],
    ['Journal of Natural History', 3],
    ['P. van Cleef', 1],
    ['Philosophical Transactions of the Royal Society of London', 2],
    ['Proceedings of the Biological Society of Washington', 1],
    ['Reports of Science Research Voyage of H. M. S. Challenger. Zoology', 5],
    ['The Biological Bulletin', 1],
    ['Transactions of the Linnean Society of London, Second Series. Zoology', 2],
    ['ZooKeys', 6],
    ['Zootaxa', 31],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=66)',
    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);