function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Else, George R. & Bolton, Barry & Broad, Gavin R.', 12],
    ['Gadallah, Neveen S.', 3],
    ['Harris, Anthony C.', 1],
    ['Jahantigh, Fatemeh & Rakhshani, Ehsan & Mokhtari, Azizollah', 1],
    ['Madl, M.', 2],
    ['Mokrousov, Mikhail', 7],
    ['Rajan, Tessy & Kumar, P. Girish & Sureshan, P. M. & Binoy, C.', 10],
    ['Tomarchio, S. & G. F', 1],
    ['Turillazzi, Stefano & Matthews, Robert W. & Pradella, Duccio', 1],
    ['Verheyde, Fons & Jacobs, JEffrEY & Dekoninck, WOUTEr', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=39)',
    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);