function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agarwal, G. P. & Kumar, R.', 1],
    ['Agarwal, S. M.', 2],
    ['Agrawal, N.', 1],
    ['Agrawal, N. & Singh, B.', 1],
    ['Arabuli, Lela & Murvanidze, Lali & Faltynkova, Anna', 2],
    ['Barker, Franklin D.', 2],
    ['Bhadauria, S. & Dandotia, M. R.', 5],
    ['Bilqees, Fatima Mujib & Khan, Aly', 1],
    ['Biocca, E & Benetti, M. P.', 1],
    ['Bourgat, R. & Combes, C.', 1],
    ['Bourgat, R. & Kulo, S-D.', 1],
    ['Braun, M.', 2],
    ['Chandra, K. J. & Banerjee, M.', 1],
    ['Lal, M. B.', 2],
    ['Mehra, R. K.', 5],
    ['Other (29)', 29]
  ]);
  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);