function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahmad, J. & Dhar, R. L.', 1],
    ['Ahmad, J. & Gupta, V.', 3],
    ['Bartoli, Pierre', 1],
    ['Bilqees, Fatima Mujib & Khan, A.', 1],
    ['Durio, Walter O. & Manter, Harold W.', 1],
    ['Ebaid, Nabila M.', 1],
    ['Fischthal, Jacob H.', 1],
    ['Fischthal, Jacob H. & Nasir, P.', 1],
    ['Fischthal, Jacob H. & Thomas, J. D.', 4],
    ['Gupta, S. P. & Gupta, R. C.', 1],
    ['Gupta, V. & Jain, N.', 1],
    ['Madhavi, R.', 2],
    ['Overstreet, Robin M.', 4],
    ['Thomas, J. D.', 4],
    ['Yamaguti, S.', 4],
    ['Other (9)', 9]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=39)',
    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);