function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bermudez-Cova, Miguel A. & Hofmann, Tina A. & Yorou, Nourou S.', 21],
    ['Gokul, Gopinathan Nair & Thomas, Jacob', 1],
    ['Hosagoudar, V. B. & Archana, G. R.', 5],
    ['Hosagoudar, V. B. & Riju, M. C.', 7],
    ['Hosagoudar, V. B. & Robin, P. J. & Shivaraju, B.', 9],
    ['Mohamed, Hina & Thomas, Jacob', 2],
    ['Sabeena, Aliyarukunju & Biju, Haridas', 2],
    ['Saldaitis, Aidas & Benedek, Balázs', 2],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);