function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Botha, Thomas P. A. & Griffiths, Charles L.', 14],
    ['Chan, Benny K. K. & Cheang, Chi Chiu & Chen, I-Han', 7],
    ['Chan, Benny K. K. & Dreyer, Niklas & Gale, Andy S.', 4],
    ['Chan, Benny K. K. & Kolbasov, Gregory A. & Cheang, Chi-Chiu', 1],
    ['Chan, Benny K. K. & Kolbasov, Gregory A. & Hirose, Mamiko', 3],
    ['Kolbasov, Gregory A. & Chan, Benny K. K. & Cheng, Yu-Rong', 2],
    ['Kolbasov, Gregory A. & Newman, William A.', 7],
    ['Stubbings, H. G.', 1],
    ['Tomlinson, J. T.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    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);