function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alatawi, Fahad Jaber & Kamran, Muhammad & Mirza, Jawwad Hassan', 5],
    ['Azevedo, Letícia H. & Castilho, Raphael C. & Berto, Marielle M.', 13],
    ['Dwibadra, Dhian & Takaku, Gen & Ôhara, Masahiro & Ueda, Akira', 22],
    ['Emberson, Rowan M.', 7],
    ['Farahi, Sara & Shishehbor, Parviz & Nemati, Alireza', 7],
    ['Hartini, Sri & Takaku, Gen', 6],
    ['Kontschán, Jenő', 35],
    ['Lin, Jian-Zhen', 9],
    ['Ma, Min & Li, Sheng-Cai & Fan, Qing-Hai', 8],
    ['Nemati, Alireza & Riahi, Elham & Khalili-Moghadam, Arsalan', 7],
    ['Quintero-Gutiérrez, Edwin Javier & Halliday, Bruce', 8],
    ['Willmann, C.', 6],
    ['Ács, A. & Sutak, A. & Kontschan, J.', 8],
    ['Özbek, Hasan Hüseyin', 7],
    ['Özbek, Hasan Hüseyin & Bal, Durmuş Ali & Doğan, Salih', 8],
    ['Other (23)', 51]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=207)',
    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);