function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chipman, Ariel D. & Dor, Neta & Bonato, Lucio', 1],
    ['Iorio, Étienne & Zapparoli, Marzio & Ponel, Philippe', 1],
    ['Korobushkin, Daniil I. & Semenyuk, Irina I. & Tuf, Ivan H.', 2],
    ['Marzio Zapparoli', 2],
    ['Simaiakis, Stylianos Michail & Akkari, Nesrine', 2],
    ['Simaiakis, Stylianos Michail & Zapparoli, Marzio', 2],
    ['Stojanović, Dalibor Z. & Šević, Mirko & Makarov, Slobodan E.', 1],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Thofern, Detlef & Dupérré, Nadine & Harms, Danilo', 2],
    ['Tuf, Ivan Hadrián & Ivinskis, Povilas & Rimšaitė, Jolanta', 1],
    ['Zapparoli, Marzio', 4],
    ['Zapparoli, Marzio & Iorio, Etienne', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);