function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agarwal, G. P. & Kumar, R.', 2],
    ['Bhadauria, S. & Dandotia, M. R.', 2],
    ['Gupta, V. & Tiwari, Meera', 3],
    ['Hopkins, Sewell H.', 2],
    ['Manter, Harold W.', 4],
    ['Maurya, A. K. & Agarwal, G. P.', 4],
    ['Shen, J. - w.', 2],
    ['Srivastava, C. B.', 3],
    ['Srivastava, H. D.', 3],
    ['Szidat, L.', 2],
    ['Velasquez, Carmen C.', 5],
    ['Verma, S. C.', 3],
    ['Wang, P. - q.', 3],
    ['Woodhead, Arthur E.', 2],
    ['Yamaguti, S.', 9],
    ['Other (33)', 33]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=82)',
    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);