function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Kluge, Nikita', 4],
    ['Kluge, Nikita & Srinivasan, Pandiarajan & Sivaruban, T.', 7],
    ['Martynov, Alexander V. & Sivaruban, T. & Palatov, Dmitry M.', 2],
    ['Sartori, Michel & Peters, Janice G. & Hubbard, Michael D.', 8],
    ['Selvakumar, C. & Sivaramakrishnan, K. G. & Jacobus, Luke M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);