function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aken’Ova, T. O.', 1],
    ['Aleshkina, L. D. & Gaevskaya, A. V.', 1],
    ['Andres, Michael J. & Overstreet, Robin M.', 1],
    ['Bilqees, Fatima Mujib', 3],
    ['Fischthal, Jacob H. & Thomas, J. D.', 1],
    ['Khan, A. K. & Karyakarte, P. P.', 1],
    ['Lokhande, L. U.', 1],
    ['Pritchard, M. H.', 1],
    ['Shen, J. - w.', 1],
    ['Yadav, B. B.', 1],
    ['Yamaguti, S.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);