function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baycelebi, Esra', 1],
    ['Brahimi, Amina & Freyhof, Jörg & Henrard, Arnaud', 3],
    ['Brahimi, Amina & Libois, Roland & Henrard, Arnaud', 3],
    ['Casal-Lopez, Miriam & Perea, Silvia & Yahyaoui, A.', 3],
    ['Doadrio, Ignacio & Casal-Lopez, Miriam & Perea, Silvia', 2],
    ['Eagderi, Soheil & Mouludi-Saleh, Atta & Esmaeili, Hamid Reza', 9],
    ['Kaya, Cueneyt & Baycelebi, Esra & Turan, Davut', 2],
    ['Kaya, Cüneyt & Bayçelebi, Esra & Turan, Davut', 1],
    ['Saad, Adib & Çiçek, Erdoğan & Esmaeili, Hamid Reza', 8],
    ['Sayyadzadeh, Golnaz & Esmaeili, Hamid Reza', 10],
    ['Turan, Davut & Ekmekçï, Güler & Ïlhan, Alï', 2],
    ['Çiçek, Erdoğan & Fricke, Ronald & Eagderi, Soheil', 3],
    ['Çiçek, Erdoğan & Fricke, Ronald & Sungur, Sevil', 1],
    ['Çiçek, Erdoğan & Jawad, Laith & Eagderi, Soheil', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);