function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Grubbs, Scott A.', 4],
    ['Grubbs, Scott A. & Baumann, Richard W.', 22],
    ['Grubbs, Scott A. & Sheldon, Andrew L.', 1],
    ['Stark, Bill P. & Harrison, Audrey B.', 1],
    ['Tarter, Donald C. & Chaffee, Dwight L. & Grubbs, Scott A.', 1],
    ['Verdone, Chris J. & Kondratieff, Boris C. & DeWalt, R. Edward', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);