function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Kandari, Manal & Polikarpov, Igor & Nithyanandan, Manickam', 2],
    ['Alonso, G. M.', 1],
    ['Azman, B. A. R.', 2],
    ['Azman, B. A. R. & Othman, B. H. R.', 1],
    ['Bate, Charles Spence', 1],
    ['Ishimaru, Shin-ichi & Ikehara, Koji', 2],
    ['Kim, Kyung-Won & Zhang, Xin & Choi, Jae-Hong & Kim, Jun', 2],
    ['Lee, Kyung-Sook', 3],
    ['Morales-Nunez, Andres G. & Chigbu, Paulinus', 2],
    ['Stebbing, Thomas R. R.', 1],
    ['Tandberg, Anne Helene S. & Vader, Wim', 3],
    ['Thacker, Dimple & Patel, Krupal & Myers, Alan', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);