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 ', 2],
    ['Biodiversity Data Journal', 11],
    ['Bulletin of the Bernice Pauahi Bishop Museum', 1],
    ['E. J. Brill', 13],
    ['Journal of Natural History', 29],
    ['Memoirs of the Museum of Comparative Zoology, at Harvard College', 2],
    ['Poisson', 1],
    ['Proceedings of the California Academy of Sciences', 5],
    ['Proceedings of the Essex Institute', 1],
    ['Turin, De l\'imprimerie royale, 1860.', 1],
    ['ZooKeys', 70],
    ['Zoological Journal of the Linnean Society', 10],
    ['Zoosystema', 2],
    ['Zootaxa', 147]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=295)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);