function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abo-Shnaf, Reham I. A. & De, Gilberto J.', 3],
    ['Akyazi, Rana & Soysal, Mete & Altunç, Yunus Emre', 1],
    ['Asali Fayaz, B. & Khanjani, M. & Molavi, F. & Ueckermann, E. A.', 1],
    ['DökerK, Ismail & JoharchiK, Omid & KarutK, Kamil', 1],
    ['Erdoğan, Tuğba & Çobanoğlu, Sultan', 1],
    ['Faraji, Farid & Jalaeian, Mahdi & Mcmurtry, James A.', 2],
    ['Farazmand, Azadeh & Jalaeian, Mahdi & Kamali, Hashem', 1],
    ['Guanilo, Alberto Daniel & Moraes, Gilberto José De', 1],
    ['K, Ismail Döker & VangansbekeK, Dominiek & K, Jonas Merckx', 1],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 1],
    ['Tixier, Marie-Stephane & Allam, Latifa & Douin, Martial', 2],
    ['Tixier, Marie-Stéphane & Baldassar, Andrea & Duso, Carlo', 3],
    ['ZahidiK, Abdelaziz & Akchour, Abdellah & K, Serge Kreiter', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);