function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cianferoni, Fabio', 1],
    ['Cianferoni, Fabio & Buzzetti, Filippo Maria & Zettel, Herbert', 1],
    ['Fent, Meral & Kment, Petr & Çamur-Elipek, Belgin & Kirgiz, Timur', 5],
    ['Ghahari, Hassan & Moulet, Pierre & Ostovan, Hadi', 2],
    ['Heiss, Ernst & Eckelt, Andreas & Lederwasch, Manfred', 11],
    ['Kment, Petr & Carapezza, Attilio', 2],
    ['Kment, Petr & Jindra, Zdeněk', 3],
    ['Kment, Petr & Jindra, Zdeněk & Berchi, Gavril Marius', 21],
    ['Kment, Petr & Kolínová, Zdislava', 6],
    ['Moreira, Felipe Ferraz Figueiredo & Barbosa, Julianna Freires', 6],
    ['Pelingen, Arthien Lovell & Zettel, Herbert', 6],
    ['Riviaux, Senén Muñoz & Moreira, Felipe Ferraz Figueiredo', 2],
    ['Shapovalov, Maksim I. & Saprykin, Maksim A.', 2],
    ['Stella, César Adrián & Pall, José Luis', 2],
    ['Zettel, H.', 14],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=92)',
    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);