function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Ping-ping & Nieser, Nico & Lansbury, Ivor', 4],
    ['El-Hawagry, Magdi S. & Sharaf, Mostafa R. & Al Dhafer, Hathal M.', 1],
    ['Kment, Petr & Kolínová, Zdislava', 1],
    ['Kment, Petr & Kolínová, Zdislava & Heiss, Ernst', 1],
    ['Krüger, Andreas & Deckert, Jürgen', 2],
    ['Nieser, Nico & Chen, Ping-ping & Yang, Chang Man', 3],
    ['Pelingen, Arthien Lovell & Zettel, Herbert', 2],
    ['Polhemus, Dan A.', 38],
    ['Spinola, Maximilien', 1],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1],
    ['Young, Euan C.', 1],
    ['Zettel, Herbert & Lane, David J. W. & Pangantihon, Clister V.', 10],
    ['Zettel, Herbert & Tran, A. D.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=66)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);