function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brackett, Sterling', 1],
    ['Donges, J.', 1],
    ['Fain, A.', 5],
    ['Khalifa, R.', 1],
    ['Lal, M. B.', 1],
    ['Najim, A. T.', 1],
    ['Odhner, T.', 1],
    ['Omran, L. A. & El-Naffar, M. K. & Mandour, A. M.', 1],
    ['Reimer, Lothar W.', 1],
    ['Schuster, Rolf K. & Aldhoun, Jitka A. & O’Donovan, Declan', 1],
    ['Shakarbaev, U. A. & Akramova, F. D. & Azimov, D. A.', 2],
    ['Szidat, L.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);