function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alatawi, Fahad Jaber & Kamran, Muhammad & Mirza, Jawwad Hassan', 1],
    ['Barbar, Ziad', 1],
    ['Bhattacharyya, Asit K.', 1],
    ['De Castro, Matheus C. & Barros, Ávyla R. A.', 3],
    ['De Moraes, Gilberto J. & Britto, Erika P. J.', 26],
    ['De, Jeferson L. & Lindquist, Evert E. & De, Gilberto J.', 1],
    ['Karami, Fatemeh & Hajizadeh, Jalil & Ostovan, Hadi & I, Northern', 1],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 1],
    ['Lin, Jian-Zhen', 2],
    ['Nemati, Alireza & Riahi, Elham & Khalili-Moghadam, Arsalan', 1],
    ['Rueda-Ramírez, Diana & Varela, Amanda & De Moraes, Gilberto J.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);