function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bertolaso, Luca & Garilli, Vittorio & Parrinello, Daniela', 1],
    ['Dell’Angelo, Bruno & Bonfitto, Antonio', 1],
    ['Dell’Angelo, Bruno & Landau, Bernard M. & Sosso, Maurizio', 2],
    ['Dell’Angelo, Bruno & Schwabe, Enrico & Gori, Sandro', 2],
    ['Mariottini, Paolo & Smriglio, Carlo & Oliverio, Marco', 4],
    ['Schwabe, Enrico', 14],
    ['Schwabe, Enrico & Försterra, Günter & Häussermann, Verena', 2],
    ['Schwabe, Enrico & Lozouet, Pierre', 2],
    ['Sigwart, Julia D. & Sirenko, Boris I.', 19],
    ['Sirenko, B. I.', 4],
    ['Sirenko, Boris', 48],
    ['Sirenko, Boris & Sellanes, Javier', 6],
    ['Sirenko, Boris I.', 14],
    ['Sirenko, Boris I. & Saito, Hiroshi', 1],
    ['Wiklund, Helena & Taylor, John D. & Dahlgren, Thomas G.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=121)',
    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);