function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Deepak, V. & Giri, Varad B. & Asif, Mohammad & Dutta, Sushil K.', 3],
    ['Deepak, V. & Khandekar, Akshay & Chaitanya, R.', 2],
    ['Deepak, V. & Khandekar, Akshay & Varma, Sandeep & Chaitanya, R.', 1],
    ['Deepak, V. & Tillack, Frank & Kar, Niladri B. & Sarkar, Vivek', 1],
    ['Sadasivan, Kalesh & Ramesh, M. B. & Palot, Muhamed Jafer', 1],
    ['Thasun Amarasinghe, A. A. & Ineich, Ivan', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);