function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bray, Rodney A.', 1],
    ['Bray, Rodney A. & Cribb, Thomas H. & Barker, Stephen C.', 2],
    ['Brinkmann, August', 1],
    ['Jaiswal, G. P.', 1],
    ['Janiszewska, J.', 1],
    ['Layman, E. M.', 1],
    ['Looss, A.', 1],
    ['Lühe, M.', 1],
    ['Manter, Harold W.', 3],
    ['Mola, Pasquale', 1],
    ['Nicoll, W.', 1],
    ['Prudhoe, S. & Bray, Rodney A.', 1],
    ['Shen, J. - w.', 3],
    ['Shen, J. - w. & Qiu, Zhaozhi', 1],
    ['Wang, P. - q.', 2],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    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);