function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Coppejans, Eric & Leliaert, Frederik & Verbruggen, Heroen', 19],
    ['Costanzo, Luca Giuseppe & Marletta, Giuliana', 1],
    ['Davidson, Alisha D. & Campbell, Marnie L. & Hewitt, Chad L.', 3],
    ['Fassbender, Nico & Stefanoudis, Paris V', 5],
    ['Huisman, John M. & Verbruggen, Heroen', 2],
    ['Jarvis, Charlie', 2],
    ['Mead, A. & Carlton, J. T. & Griffiths, C. L. & Rius, M.', 1],
    ['Rocha, Mayara C. B. S. & Pereira, Sonia M. B.', 2],
    ['SCHLAGINTWEIT, FELIX & RASHIDI, KOOROSH & MOSAVINIA, ABDOLMAJID', 1],
    ['Wade, Rachael M & Spalding, Heather L & Peyton, Kimberly A', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);