function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Croat, Thomas B. & Carlsen, Monica M.', 1],
    ['Gowda, Vinita & Kress, W. John & Htun, Thet', 2],
    ['Kamer, Hiltje Maas-van de & Maas, Paul J. M.', 1],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 5],
    ['Noel, Gregoire & Bonnet, Julie & Everaerts, Sylvain', 5],
    ['Plunkett, George T. & Wilson, Karen L. & Bruhl, Jeremy J.', 1],
    ['Ramana, M. Venkat & Nandikar, Mayur & Gurav, R. V.', 1],
    ['Rigo, Attila & Malatinszky, Akos & Barina, Zoltan', 2],
    ['Sanoj, Edakkandiyil & Sabu, Mamiyil & Pradeep, Ayillath Kuttiyil', 2],
    ['Swapna, M. M. & Rajesh, K. P. & Manju, C. N. & Prakashkumar, R.', 1],
    ['Thomas, V. P. & Sabu, M. & Kumar, K. M. Prabhu', 1],
    ['Verloove, Filip', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    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);