function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alatawi, Fahad Jaber & Kamran, Muhammad & Mirza, Jawwad Hassan', 1],
    ['Dugès, A.', 1],
    ['Ma, Min & Li, Sheng-Cai & Fan, Qing-Hai', 4],
    ['Mašán, Peter & Fenďa, Peter & Krištofík, Ján & Halliday, Bruce', 8],
    ['Nemati, Alireza & Riahi, Elham & Khalili-Moghadam, Arsalan', 2],
    ['Qi, Xiaoxiao & Li, Huan & Liu, Xin & Wang, Bohan & Meng, Jiali', 2],
    ['Reeves, Will K. & Durden, Lance A. & Ritzi, Christopher M.', 3],
    ['Soulié, Anne-Sophie & Sleeckx, Nathalie & Review, Lise Roy', 3],
    ['Willmann, C.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);