function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Conradie, Werner & Branch, William R. & Watson, Gillian', 6],
    ['Couper, Patrick J. & Keim, Lauren D. & Hoskin, Conrad J.', 4],
    ['Hoser, Raymond', 3],
    ['Hoskin, Conrad J.', 4],
    ['Hoskin, Conrad J. & Higgie, Megan', 1],
    ['Hoskin, Conrad J. & Zozaya, Stephen M. & Vanderduys, Eric', 1],
    ['Oliver, Paul M. & Doughty, Paul', 4],
    ['Oliver, Paul M. & Jolly, Chris J. & Skipwith, Phillip L.', 4],
    ['Oliver, Paul M. & Laver, Rebecca J. & Melville, Jane', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    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);