function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bonato, Lucio & Bortolin, Francesca & Drago, Leandro', 3],
    ['Bonato, Lucio & Bortolin, Francesca & Zen, Giada De', 4],
    ['Bonato, Lucio & Dányi, László & Socci, Antonio Augusto', 45],
    ['Bonato, Lucio & Minelli, Alessandro', 1],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['Calvanese, Victor C. & Brescovit, Antonio D. & Bonato, Lucio', 2],
    ['Iorio, Étienne & Zapparoli, Marzio & Ponel, Philippe', 3],
    ['Marzio Zapparoli', 4],
    ['Nefediev, P. S.', 1],
    ['Nefediev, Pavel S. & Farzalieva, Gyulli Sh. & Tuf, Ivan H.', 8],
    ['Simaiakis, Stylianos Michail & Akkari, Nesrine', 2],
    ['Thofern, Detlef & Dupérré, Nadine & Harms, Danilo', 1],
    ['Tran, Binh T. T. & Le, Son X. & Nguyen, Anh D.', 3],
    ['Tuf, Ivan Hadrián & Ivinskis, Povilas & Rimšaitė, Jolanta', 1],
    ['Zarei, Roghaieh & Rahimian, Hassan & Mirmonsef, Hassan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=81)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);