function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 1],
    ['Liu, L. Y. & Beaver, R. A. & Yang, J. T.', 4],
    ['Liu, Lan-Yu', 11],
    ['Majka, Christopher G.', 1],
    ['Mitter, Heinz & A, Upper', 1],
    ['Nardi, Gianluca & Mifsud, David', 1],
    ['Ruzzier, Enrico & Morin, Lucio & Zugno, Matteo & Tapparo, Andrea', 1],
    ['Sittichaya, Wisut & Beaver, Roger & Liu, Lan-Yu', 1],
    ['Zhang, Yi-Feng & Meng, Ling-Zeng & Beaver, Roger A.', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=31)',
    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);