function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Artaev, Oleg & Ruchin, Alexander B.', 1],
    ['Bogutskaya, Nina G. & Ahnelt, Harald', 1],
    ['Coad, Brian & Bogutskaya, Nina', 2],
    ['Coad, Brian W. & Bogutskaya, Nina G.', 1],
    ['Eagderi, Soheil & Mouludi-Saleh, Atta & Esmaeili, Hamid Reza', 9],
    ['Kaya, Cueneyt & Baycelebi, Esra & Turan, Davut', 1],
    ['Kaya, Cüneyt', 2],
    ['Kaya, Cüneyt & Bayçelebi, Esra & Turan, Davut', 10],
    ['Mousavi-Sabet, Hamed & Vatandoust, Saber & Doadrio, Ignacio', 3],
    ['Nurettin Meriç & Lütfiye Eryilmaz & Müfit Özulug', 1],
    ['Sayyadzadeh, Golnaz & Esmaeili, Hamid Reza', 10],
    ['Turan, Davut & Kaya, Cüneyt & Bayçelebi, Esra & Bektaş, Yusuf', 3],
    ['Turan, Davut & Kaya, Cüneyt & Ekmekçi, F. Güler & Doğan, Esra', 3],
    ['Çiçek, Erdoğan & Fricke, Ronald & Eagderi, Soheil', 2],
    ['Çiçek, Erdoğan & Jawad, Laith & Eagderi, Soheil', 2],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    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);