function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bray, Rodney A. & Cribb, Thomas H.', 1],
    ['Bray, Rodney A. & Cribb, Thomas H. & Barker, Stephen C.', 1],
    ['Fischthal, Jacob H. & Thomas, J. D.', 1],
    ['Gupta, A. N.', 3],
    ['Gupta, A. N. & Sharma, P. N. & Jain, S. P.', 1],
    ['Liu, Sheng-fa', 1],
    ['Manter, Harold W.', 1],
    ['Nagaty, H. F.', 1],
    ['Reimer, Lothar W.', 1],
    ['Sey, Otto', 1],
    ['Shen, J. - w.', 1],
    ['Shen, J. - w. & Tong, Yong-yong', 1],
    ['Stunkard, Horace W.', 1],
    ['Vigueras, I. P.', 1],
    ['Yamaguti, S.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);