function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Jahdali, O. & O, P.', 1],
    ['Caballero y C., Eduardo & Bravo-Hollis, Margarita', 1],
    ['Goto, Seitaro & Matsudaira, Yasunga', 1],
    ['Gu, Chang-dong & Shen, J. - w.', 3],
    ['Gupta, S. P. & Tandon, V. L.', 1],
    ['Hall, Kathryn A. & Chambers, Clinton B.', 1],
    ['Hall, Kathryn A. & Cribb, Thomas H.', 20],
    ['López-Román, R. & Gijón-Botella, H. & Kim, M. & Vilca-Choque, J.', 1],
    ['Machida, Masaaki', 1],
    ['Manter, Harold W. & Pritchard, M. H.', 2],
    ['Nagaty, H. F.', 1],
    ['Nahhas, Fuad M. & Wetzel, Jeff A.', 3],
    ['Nicoll, W.', 1],
    ['Ozaki, Yoshimasa', 4],
    ['Yamaguti, S.', 4],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);