function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ball, Ian R.', 5],
    ['Curini-Galletti, Marco & Carcupino, Marcella', 8],
    ['Curini-Galletti, Marco & Casu, Marco', 4],
    ['Curini-Galletti, Marco & Delogu, Valentina & Campus, Paolo', 4],
    ['Curini-Galletti, Marco & Schockaert, Ernest R.', 10],
    ['Curini-Galletti, Marco & Stocchino, Giacinta A.', 12],
    ['Delogu, Valentina & Curini-Galletti, Marco', 6],
    ['Faubel, A. & Warwick, R. M.', 6],
    ['Gammoudi, Mehrez & Garbouj, Myriam & Egger, Bernhard', 14],
    ['Jones, Hugh D. & Mcdonald, Jillian C.', 4],
    ['Jones, Hugh D. & Webster, Bonnie L. & Littlewood, D. Timothy J.', 4],
    ['Meini, Gianluca', 5],
    ['Schockaert, Ernest R. & Curini-Galletti, Marco', 20],
    ['Sluys, Ronald & Neumann, Matthias & De Lima, Ricardo F.', 6],
    ['Vila-Farré, Miquel & Sluys, Ronald & Almagro, Ío', 13],
    ['Other (38)', 60]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=181)',
    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);