function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A. W', 1],
    ['Ban, C. & Ljubomirov, T.', 4],
    ['Boustani, Mira & Rasmont, Pierre & Dathe, Holger H.', 11],
    ['Byvaltsev, A. M. & Belova, K. A. & Danilov, Yu. N.', 1],
    ['Ebmer, A. W.', 2],
    ['Else, George R. & Bolton, Barry & Broad, Gavin R.', 4],
    ['Engel, Michael S. & Griswold, Terry', 2],
    ['Gibbs, Jason & Ascher, John S. & Rightmyer, Molly G.', 2],
    ['Kuhlman, Marirose & Burrows, Skyler', 2],
    ['Lhomme, Patrick', 3],
    ['Müller, Andreas', 15],
    ['Portman, Zachary M. & Gardner, Joel & Lane, Ian G.', 2],
    ['Risch, Stephan & Roberts, Stuart P. M. & Smit, Jan', 3],
    ['Schmid, C.', 2],
    ['Zettel, Herbert & Ockermüller, Esther & Schoder, Sabine', 3],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=64)',
    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);