function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bischoff, Hans', 30],
    ['Brothers, D. J. & Lelej, A. S. & Madl, M.', 7],
    ['Gadallah, Neveen S. & Lelej, Arkady S. & Brothers, Denis J.', 3],
    ['Lelej, Arkady S. & Proshchalykin, Maxim Yu.', 9],
    ['Lelej, Arkady S. & Yildirim, Erol', 5],
    ['Ljubomirov, Toshko & Ghahari, Hassan', 14],
    ['Madl, Michael', 1],
    ['Terine, Joshua B. & Kumar, Girish P. & Adithya, Yogesh B.', 2],
    ['Yildirim, Erol & Tezcan, Serdar', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=72)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);