function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akrami, Mohammad Ali', 8],
    ['Akrami, Mohammad Ali & Shahedi, Alireza', 1],
    ['Arun, A. & Ramani, N.', 4],
    ['Ebrahimi, Forough & A, Mohammad', 1],
    ['Ermilov, S. G. & Shimano, S. & Vu, Q. M.', 1],
    ['Ermilov, Sergey G. & Anichkin, Alexander E. & Wu, Donghui', 3],
    ['Fernandez, Nestor & Theron, Pieter & Rollard, Christine', 1],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 2],
    ['Murvanidze, Maka & Mumladze, Levan', 2],
    ['Norton, Roy A. & Ermilov, Sergey G.', 4],
    ['Oliveira, Anibal R. & Argolo, Poliane S. & De, Gilberto J.', 2],
    ['Ren, Guoru & Yang, Maofa & Liang, Wenqin & Xie, Lixia', 2],
    ['Schatz, H. & Schuster, R.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    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);