function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ayres, W. O.', 3],
    ['Bohn, Jens Michael', 4],
    ['Christoffersen, Martin Lindsey', 3],
    ['Martins, Luciana & Marques, Alexandre Oliveira', 4],
    ['O’Loughlin, Mark & Macintosh, Hugh', 5],
    ['O’Loughlin, P. Mark & Harding 1, Caroline & Paulay, Gustav', 6],
    ['O’Loughlin, P. Mark & Mackenzie, Melanie & Vandenspiegel, Didier', 5],
    ['Pawson, David L.', 4],
    ['Pawson, David L. & Pawson, Doris J. & King, Rachael A.', 5],
    ['Pawson, David L. & Vance, Doris J.', 5],
    ['Smirnov, Alexey V. & Panina, Elena G. & Sanamyan, Nadezhda P.', 4],
    ['THANDAR, AHMED S.', 4],
    ['Théel, Hjalmar', 7],
    ['Yamana, Yusuke & Tanaka, Hayato', 4],
    ['Yamana, Yusuke & Yamamoto, Masaki & Ota, Yuzo', 4],
    ['Other (21)', 34]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=101)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);