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 ', 1],
    ['Belgian Journal of Zoology', 1],
    ['Geodiversitas', 4],
    ['Memoirs of Museum Victoria', 94],
    ['Notes from the Leyden Museum', 2],
    ['Papéis Avulsos de Zoologia', 15],
    ['Proceedings of the Boston Society of Natural History', 2],
    ['Raffles Bulletin of Zoology', 2],
    ['Report on the Scientific Results of the Voyage of H. M. S. Challenger During the Years 1873 – 76, Zoology', 25],
    ['Species Diversity', 4],
    ['Spolia Zoologica Musei Hauniensis', 3],
    ['Turici', 3],
    ['ZooKeys', 3],
    ['Zoologica', 3],
    ['Zootaxa', 366],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=532)',
    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);