function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agrawal, V.', 1],
    ['Al-Bassel, Dayhoum A. M.', 1],
    ['Bhadauria, S. & Dandotia, M. R.', 1],
    ['Dollfus, R. P.', 2],
    ['Gu, Chang-dong & Shen, J. - w.', 2],
    ['Gupta, S. P.', 4],
    ['Hafeezullah, M. & Siddiqi, Ather H.', 2],
    ['Lebour, M. V.', 2],
    ['Linton, E.', 2],
    ['Looss, A.', 4],
    ['Martin, W. E.', 2],
    ['Odhner, T.', 2],
    ['Pan, Jin-Pei', 3],
    ['Shen, J. - w.', 2],
    ['Yamaguti, S.', 6],
    ['Other (21)', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=57)',
    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);