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 ', 5],
    ['Biodiversity Data Journal', 26],
    ['European Journal of Taxonomy', 81],
    ['Journal of Natural History', 73],
    ['Journal of Species Research', 19],
    ['Neotropical Biology and Conservation', 7],
    ['Pacific Science', 6],
    ['Proceedings of the Japanese Society of Systematic Zoology', 6],
    ['Revue Suisse de Zoologie', 56],
    ['Scientia Marina', 6],
    ['Verlag von Wilhelm Engelmann', 36],
    ['ZooKeys', 229],
    ['Zoological Journal of the Linnean Society', 58],
    ['Zoosystema', 58],
    ['Zootaxa', 2241],
    ['Other (23)', 36]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=2943)',
    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);