function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 1],
    ['Arzanov, Yu. G. & Martynov, V. V. & Nikulina, T. V.', 21],
    ['Barševskis, Arvīds & Janovska, Marina & Aksjuta, Kristīna', 1],
    ['Bukejs, Andris', 1],
    ['Douglas, Hume & Bouchard, Patrice & Anderson, Robert S.', 1],
    ['Ghahari, H. & A. A & Y. G', 6],
    ['Gosik, Rafał & Skuhrovec, Jiří', 6],
    ['Gueltekin, Levent & Alonso-Zarazaga, Miguel A.', 1],
    ['Gültekin, Levent', 10],
    ['Gültekin, Levent & Alonso-Zarazaga, Miguel Angel', 1],
    ['Gültekin, Levent & Perrin, Hélène', 22],
    ['Gültekin, Levent & Podlussány, Attila', 2],
    ['Gültekin, Levent & Shahreyary-Nejad, Saideh', 1],
    ['Mitter, Heinz', 1],
    ['Yunakov, Nikolai & Nazarenko, Vitalij & Filimonov, Rostislav', 29],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=106)',
    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);