function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bertozzi, Terry & Guzinski, Jaro', 2],
    ['Catullo, Renee A. & Doughty, Paul & Keogh, J. Scott', 3],
    ['Catullo, Renee A. & Doughty, Paul & Roberts, Dale & Keogh, Scott', 6],
    ['Clulow, Simon & Anstis, Marion & Keogh, J. Scott', 2],
    ['Donnellan, S. & Anstis, M. & Price, L. & Wheaton, L.', 2],
    ['Doughty, Paul & Roberts, Dale', 2],
    ['Goldberg, Javier & Fabrezi, Marissa', 1],
    ['Loader, Simon P. & Poynton, John C. & Davenport, Tim R. B.', 1],
    ['Mahony, Michael & Donnellan, Stephen C. & Richards, Stephen J.', 3],
    ['Mahony, Michael J. & Hines, Harry B. & Mahony, Stephen V.', 1],
    ['Miracle, Eulàlia Gassó & Van, Lars W. & Ostende, Den Hoek', 1],
    ['Webster, Grant N. & Bool, Ian', 2],
    ['Wijnands, Dirk Onno & Heniger, Johannes & Veldkamp, Jan Frederik', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);