function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brancelj, Anton', 1],
    ['Corgosinho, Paulo H. C. & Arbizu, Pedro Martínez', 1],
    ['Cottarelli, Vezio & Bruno, Maria Cristina & Berera, Raffaella', 1],
    ['Dimante-Deimantovica, I. & Jensen, T. C. & Walseng, B.', 3],
    ['Dole-Olivier, Marie-José & Galassi, Diana M. P. & Fiers, Frank', 1],
    ['KARPOWICZ, Maciej', 1],
    ['Karanovic, Tomislav & Lee, Wonchoel', 3],
    ['Reddy, Yenumula Ranga & Defaye, Danielle', 3],
    ['Reddy, Yenumula Ranga & Totakura, Venkateswara Rao', 1],
    ['Totakura, Venkateswara Rao & Reddy, Yenumula Ranga', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);