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 ', 4],
    ['Biodiversity Data Journal', 2],
    ['Birkhaeuser Verlag', 1],
    ['Bulletin of the Museum of Comparative Zoology at Harvard College', 1],
    ['Copeia', 1],
    ['European Journal of Taxonomy', 8],
    ['Marine Investigations in South Africa', 1],
    ['Masson', 2],
    ['Proceedings of the United States National Museum, 3', 1],
    ['Special Bulletin of the United States National Museum', 2],
    ['Zootaxa', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=37)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);