function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alpine Entomology', 8],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 13],
    ['Biodiversity Data Journal', 273],
    ['Bulletin of the American Museum of Natural History', 1],
    ['C. G. Proft, Fil. et Soc.', 1],
    ['E. W. Janson', 6],
    ['Entomo Helvetica', 2],
    ['European Journal of Taxonomy', 292],
    ['Far Eastern Entomologist', 15],
    ['Felsecker', 2],
    ['Journal of Hymenoptera Research', 181],
    ['Journal of Melittology', 1],
    ['Linzer biologische Beiträge', 155],
    ['ZooKeys', 86],
    ['Zootaxa', 908],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=1946)',
    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);