function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brady, H. B.', 1],
    ['Caus, Esmeralda & Parente, Mariano & Vicedo, Vicent', 1],
    ['Gedik, Fatma', 1],
    ['Lamarck, J. B. P. A. de M. de', 1],
    ['Mamo, Briony L.', 3],
    ['SIMMONS, MICHAEL & BIDGOOD, MICHAEL', 17],
    ['Schönfeld, Joachim & Lübbers, Julia', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);