function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel Aal, Tahia M. & Banaja, A. A. & Al Zanbagi, N. A.', 2],
    ['Acena, Sergio P.', 2],
    ['Blend, Charles K. & Dronen, Norman O. & Armstrong, Howard W.', 6],
    ['Bray, Rodney A. & Gibson, David Ian', 5],
    ['Campbell, Ronald A. & Bray, Rodney A.', 4],
    ['Gaevskaya, A. V. & Rodyuk, G. N.', 2],
    ['Hafeezullah, M.', 2],
    ['Manter, Harold W.', 5],
    ['McCauley, J. E.', 7],
    ['Sezen-Akandere, Y.', 2],
    ['Shen, J. - w.', 2],
    ['Sogandares-Bernal, F.', 2],
    ['Yamaguti, S.', 8],
    ['Zdzitowiecki, Krzysztof', 3],
    ['Zdzitowiecki, Krzysztof & Cielecka, Danuta', 3],
    ['Other (20)', 20]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=75)',
    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);