function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel Aal, Tahia M. & Banaja, A. A. & Al Zanbagi, N. A.', 1],
    ['Ahmad, J.', 1],
    ['Arabuli, Lela & Murvanidze, Lali & Faltynkova, Anna', 1],
    ['Bray, Rodney A. & Cribb, Thomas H.', 1],
    ['Carreras-Aubets, Marta & Repullés-Albelda, Aigües', 1],
    ['Hafeezullah, M.', 1],
    ['Hussain, S. A. & Hanumantha Rao, K. & Shyamasundari, K.', 1],
    ['Issaitschikow, I. M.', 1],
    ['Layman, E. M.', 1],
    ['Manter, Harold W.', 3],
    ['Shen, J. - w.', 3],
    ['Shen, J. - w. & Qiu, Zhaozhi', 3],
    ['Siddiqi, Ather H. & Cable, Raymond M.', 2],
    ['Srivastava, H. D.', 2],
    ['Yamaguti, S.', 7],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    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);