function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Appolloni, Massimo & Smriglio, Carlo & Amati, Bruno', 3],
    ['Fuersich, Franz T. & Alberti, Matthias & Pandey, Dhirendra K.', 1],
    ['Koppka, Jens', 9],
    ['Kosenko, Igor', 1],
    ['Lam, Katherine & Morton, Brian', 1],
    ['Lam, Katherine & Morton, Brian & Leung, K. F.', 1],
    ['Lamarck, J. B. P. A. de M. de', 1],
    ['Musavu Moussavou, Benjamin', 7],
    ['Oliver, P. Graham & Holmes, Anna & Killeen, Ian & Light, Janice', 2],
    ['Pacaud, Jean-Michel', 1],
    ['Poyato-Ariza F. J. & Wenz S.', 1],
    ['Raines, Bret & Huber, Markus', 4],
    ['Sowerby, James DeCarle', 1],
    ['Squires, Richard L. & Demetrion, Robert', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=35)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);