function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almquist and Wiksells', 1],
    ['American Museum Novitates', 1],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 1],
    ['Annals of the Natal Museum', 1],
    ['Biodiversity Data Journal', 1],
    ['Compte Rendu de l\'Académie des Sciences de l\'U. R. S. S., n. s.', 1],
    ['Journal of Arachnology', 3],
    ['Monitore Zoologico Italiano, n. s., Supplemento', 1],
    ['Pan-Pacific Entomologist', 2],
    ['Privately published', 1],
    ['Revue suisse de Zoologie', 2],
    ['Transactions of the Illinois State Academy of Science', 2],
    ['ZooKeys', 3],
    ['Zoological Systematics', 2],
    ['Zootaxa', 10],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=38)',
    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);