function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alatawi, Fahad Jaber & Kamran, Muhammad & Mirza, Jawwad Hassan', 3],
    ['Bolger, Thomas & Arroyo, Julio & Piotrowska, Katarzyna', 3],
    ['Fenďa, Peter', 5],
    ['Halliday, R. B.', 3],
    ['Ilinca Juvara-Bals', 8],
    ['Juvara-Balş, Ilinca', 8],
    ['Koch, C. L.', 7],
    ['Lin, Jian-Zhen', 62],
    ['Ma, Min & Li, Sheng-Cai & Fan, Qing-Hai', 9],
    ['Nemati, A. & Gwiazdowicz, D. J. & Riahi, E. & Mohseni, M.', 25],
    ['Nemati, Alireza & Riahi, Elham & Khalili-Moghadam, Arsalan', 13],
    ['Willmann, C.', 20],
    ['Witaliński, Wojciech', 40],
    ['WitalińskiK, Wojciech', 7],
    ['WitalińskiK, Wojciech & GwiazdowiczK, Dariusz J.', 8],
    ['Other (15)', 29]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=250)',
    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);