function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agnarsson, Ingi', 2],
    ['Ballarin, Francesco & Eguchi, Katsuyuki', 11],
    ['Ballarin, Francesco & Li, Shu-Qiang', 6],
    ['Candek, Klemen & Gregoric, Matjaz & Kostanjsek, Rok', 3],
    ['Dean, David Allen', 8],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 4],
    ['Grall, Elena & Jäger, Peter', 6],
    ['Hedin, Marshal & DELLINGER, Bob', 5],
    ['Hedin, Marshal & Milne, Marc A.', 37],
    ['Isaia, Marco & Nicolosi, Giuseppe & Infuso, Alessandro', 4],
    ['Lin, Yucheng & Ballarin, Francesco & Li, Shuqiang', 61],
    ['Liu, Jie & Li, Shuqiang', 13],
    ['Lopez-Pancorbo, Alberto & Kunt, Kadir Boğaç & Blagoev, Gergin', 3],
    ['Pavlek, Martina & Ribera, Carles', 4],
    ['Roberts', 3],
    ['Other (24)', 31]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=201)',
    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);