function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Khazali, Azhar Mohammed & Kachel, Hamid Saeid', 2],
    ['Benhalima, Souâd & Bosmans, Robert', 15],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['Coşar, Ilhan', 2],
    ['Coşar, Ilhan & Danişman, Tarik', 3],
    ['Coşar, İlhan & Danişman, Tarik & Elverici, Mert', 3],
    ['Crespo, Luis C & Domenech, Marc & Enguidanos, Alba', 7],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 6],
    ['Deltshev, Christo & Naumova, Maria & Matevski, Dragan', 12],
    ['Dimitrov, Dragomir', 4],
    ['Marjan Komnenov & Eva Pitta & Konstantina Zografou', 5],
    ['Pekár, Stano & Cardoso, Pedro', 9],
    ['Pekár, Stano & Cardoso, Pedro & Barriga, Javier C.', 19],
    ['Zamani, Alireza & Marusik, Yuri M.', 6],
    ['Zhang, Bao-Shi & Zhang, Feng', 7],
    ['Other (13)', 18]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=120)',
    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);