function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baycelebi, Esra', 6],
    ['Bogutskaya, Nina G.', 1],
    ['Coad, Brian W.', 1],
    ['Ekmekçi, F. Güler & Atalay, M. Altuğ & Yoğurtçuoğlu, Baran', 2],
    ['Freyhof, Jörg & Özuluğ, Müfit & Kaya, Cüneyt & Bayçelebi, Esra', 1],
    ['Kaya, Cüneyt & Bayçelebi, Esra & Turan, Davut', 1],
    ['Kottelat, Maurice & Barbieri, R.', 1],
    ['Krupp, Fareed', 1],
    ['Kuecuek, Fahrettin & Gueclue, Salim Serkan', 1],
    ['Kuecuek, Fahrettin & Guelle, Iskender & Gueclue, S. Serkan', 1],
    ['Küçük, Fahrettin & Gülle, İskender & Güçlü, S. Serkan', 1],
    ['Nurettin Meriç & Lütfiye Eryilmaz & Müfit Özulug', 3],
    ['Saad, Adib & Çiçek, Erdoğan & Esmaeili, Hamid Reza', 6],
    ['Saç, Gülşah & Özuluğ, Müfit & Geiger, Matthias F.', 2],
    ['Çiçek, Erdoğan & Fricke, Ronald & Sungur, Sevil', 2],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=31)',
    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);