function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdou, Nahed E. & Heckmann, Richard A. & Beltagy, Samir M.', 1],
    ['Baz, I. I.', 1],
    ['Bilqees, Fatima Mujib & Masood, S.', 2],
    ['Caballero y C., Eduardo & Caballero R., G.', 1],
    ['Gupta, N. K.', 2],
    ['Gupta, N. K. & Kumari, A.', 1],
    ['Gupta, V. & Tewari, M.', 1],
    ['Linton, E.', 4],
    ['Martin, Storm B. & Cutmore, Scott C. & Ward, Selina', 12],
    ['Nagaty, H. F.', 2],
    ['Nagaty, H. F. & Abdel Aal, Tahia M.', 7],
    ['Ramadan, M. M.', 2],
    ['Shen, J. - w.', 2],
    ['Siddiqi, Ather H. & Cable, Raymond M.', 2],
    ['Yamaguti, S.', 2],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=49)',
    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);