function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agrawai, V.', 1],
    ['Bhalerao, G. D.', 2],
    ['Bray, Rodney A. & Oosterhout, Cock Van & Blais, Jonatan', 1],
    ['Chatterji, R. C.', 1],
    ['Dhanumkumari, C.', 1],
    ['Dhar, R. L.', 1],
    ['Dwivedi, M. P.', 1],
    ['Ejsmont, L.', 1],
    ['El-Naffar, M. K. & Saoud, M. F. A & Hassan, L. M.', 1],
    ['Gupta, N. K.', 5],
    ['Gupta, V. & Jahan, A.', 2],
    ['Karar, Yasser F. M. & Blend, Charles K. & Dronen, Norman O.', 11],
    ['Mehra, H. R.', 2],
    ['Ogata, T.', 2],
    ['Tiwari, I. P.', 3],
    ['Other (14)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=49)',
    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);