function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 1],
    ['Abdel-Dayem, Mahmoud Saleh & Colonnelli, Enzo', 1],
    ['Alekseev, Vitalii I. & Drotikova, Anna M. & Rozhina, Viktoria I.', 2],
    ['Arzanov, Yu. G. & Martynov, V. V. & Nikulina, T. V.', 21],
    ['Germann, Christoph & Breitenmoser, Stève', 1],
    ['Germann, Christoph & Wermelinger, Beat & Obrist, Martin K.', 1],
    ['Ghahari, H. & A. A & Y. G', 5],
    ['Gültekin, Levent', 45],
    ['Gültekin, Levent & Korotyaev, Boris A.', 1],
    ['Gültekin, Levent & Perrin, Hélène', 4],
    ['Pascoe, Francis Polkinghorne', 1],
    ['Skuhrovec, Jiří & Volovnik, Semyon', 2],
    ['Tonnancour, Pierre de & Anderson, Robert S. & Bouchard, Patrice', 2],
    ['Trnka, Filip & Stejskal, Robert & Skuhrovec, Jiri', 2],
    ['Yunakov, Nikolai & Nazarenko, Vitalij & Filimonov, Rostislav', 33],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=124)',
    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);