function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bragina, T. M. & Dyachkov, Yu. V. & Farzalieva, G. Sh.', 1],
    ['C. Attems', 1],
    ['Cupul-Magaña, Fabio Germán', 1],
    ['Dunlop, Jason A. & Friederichs, Anja & Langermann, Jasmin', 3],
    ['Hollier, John & Stagl, Verena', 4],
    ['Iorio, Étienne & Zapparoli, Marzio & Ponel, Philippe', 1],
    ['Kiria, Eleonora & Barjadze, Shalva & Tuf, Ivan Hadrian', 1],
    ['Korobushkin, Daniil I. & Semenyuk, Irina I. & Tuf, Ivan H.', 2],
    ['Lamarck, J. B. P. A. de M. de', 1],
    ['Marzio Zapparoli', 2],
    ['Simaiakis, Stylianos Michail & Akkari, Nesrine', 1],
    ['Simaiakis, Stylianos Michail & Zapparoli, Marzio', 1],
    ['Stoev, Pavel & Geoffroy, Jean-Jacques', 2],
    ['Thofern, Detlef & Dupérré, Nadine & Harms, Danilo', 3],
    ['Zapparoli, Marzio & Iorio, Etienne', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    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);