function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bardet, Nathalie & Suberbiola, Xabier Pereda', 16],
    ['Caldwell, M. W.', 5],
    ['Conrad, J. L.', 9],
    ['Cuthbertson, Robin & Holmes, R. B.', 1],
    ['Day, F.', 1],
    ['Kiernan, Caitlin R. & Ebersole, Jun A.', 3],
    ['Pellegrin, J. & Chevey, P.', 1],
    ['Welles, S. P. & Gregg, D. R.', 2],
    ['Wood, W.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=39)',
    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);