function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['David, K. J. & Hancock, D. L. & Freidberg, A.', 10],
    ['David, K. J. & Hancock, D. L. & Sachin, K. & Mahendiran, G.', 7],
    ['David, K. J. & Hancock, D. L. & Sankararaman, H. & Sachin, K.', 4],
    ['David, K. J. & Singh, Shakti Kumar', 3],
    ['Merz, B. & Kofler, A.', 1],
    ['Norrbom, Allen L. & Hancock, David L', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    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);