function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 1],
    ['Akhter, Muhammad Atique & Drumont, Alain & Rizvi, Syed Anser', 1],
    ['Ghahari, Hassan & Packova, Gabriela & Platia, Giuseppe', 2],
    ['Girard, Claude', 5],
    ['Gulpercin, N. & Tezcan, S.', 1],
    ['Hoffmannova, Johana & Packova, Gabriela', 7],
    ['Kundrata, Robin & Mertlik, Josef & Németh, Tamás', 20],
    ['Kundrata, Robin & Németh, Tamás & Jarzabek-Müller, Andrea', 3],
    ['Nasserzadeh, Hiva', 1],
    ['Németh, Tamás', 5],
    ['Németh, Tamás & Brůha, Petr & Kundrata, Robin', 2],
    ['Platia, Giuseppe & Ghahari, Hassan', 6],
    ['Prosvirov, Alexander S.', 9],
    ['Stefanelli, Silvia & Della Rocca, Francesca & Bogliani, Giuseppe', 2],
    ['Zawadzki, Cláudio H & Tencatt, Luiz F C & Britski, Heraldo A', 2],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=71)',
    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);