function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baycelebi, Esra', 8],
    ['Eagderi, Soheil & Mouludi-Saleh, Atta & Esmaeili, Hamid Reza', 17],
    ['Freyhof, Jörg & Abdullah, Younis Sabir', 2],
    ['Freyhof, Jörg & Geiger, Matthias F. & Golzarianpour, Kiavash', 10],
    ['Freyhof, Jörg & Kaya, Cüneyt & Geiger, Matthias F.', 4],
    ['Freyhof, Jörg & Kaya, Cüneyt & Turan, Davut & Geiger, Matthias', 7],
    ['Freyhof, Jörg & Yoğurtçuoğlu, Baran & Kaya, Cüneyt', 2],
    ['Freyhof, Jörg & Özuluğ, Müfit', 2],
    ['Kamangar, Barzan Bahrami & Prokofiev, Artem M. & Ghaderi, Edris', 4],
    ['Kaya, Cueneyt & Baycelebi, Esra & Turan, Davut', 3],
    ['Kaya, Cüneyt & Bayçelebi, Esra & Turan, Davut', 8],
    ['Saad, Adib & Çiçek, Erdoğan & Esmaeili, Hamid Reza', 13],
    ['Sayyadzadeh, Golnaz & Esmaeili, Hamid Reza', 18],
    ['Yoğurtçuoğlu, Baran & Kaya, Cüneyt & Freyhof, Jörg', 12],
    ['Çiçek, Erdoğan & Jawad, Laith & Eagderi, Soheil', 11],
    ['Other (11)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=135)',
    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);