function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arens, W.', 12],
    ['Carpenter, James M. & Brown, Graham R.', 2],
    ['Carpenter, James M. & Gadallah, Neveen S.', 2],
    ['Cassar, Thomas & Mifsud, David & Selis, Marco', 2],
    ['Dvořák, Libor & Castro, Leopoldo', 2],
    ['Else, George R. & Bolton, Barry & Broad, Gavin R.', 18],
    ['Fateryga, Alexander V. & Carpenter, James M.', 5],
    ['Fateryga, Alexander V. & Proshchalykin, Maxim Yu.', 6],
    ['Gawas, Sandesh M. & Kumar, Girish & Pannure, Arati', 9],
    ['Gusenleitner, J.', 43],
    ['J. M & Gusenleitner, J. & Madl, M.', 18],
    ['Oehlke, J.', 3],
    ['Usenleitner & Gusenleitner, J. & Madl, M.', 33],
    ['Yildirim, Erol & Gusenleitner, Josef', 5],
    ['You, Ju & Chen, Bin & Li, Ting-jing', 3],
    ['Other (15)', 18]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=181)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);