function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 1],
    ['Bouchard, Patrice & Bousquet, Yves & Davies, Anthony E.', 1],
    ['Fu, Yuting & Jin, Zhenyu & Wu, Gang', 1],
    ['Ivie, Michael A. & Barclay, Maxwell V. L.', 1],
    ['Jin, Zhenyu & Qin, Zhao & Ślipiński, Adam', 13],
    ['Jin, Zhenyu & Ślipiński, Adam & Pang, Hong', 10],
    ['Jin, Zhenyu & Ślipiński, Adam & Wang, Wenkai', 2],
    ['Johnston, M. Andrew & Waite, Evan S. & Wright, Ethan R', 1],
    ['Kiesenwetter, E. A. H. von', 1],
    ['Li, Fengming & Ślipiński, Adam & Jin, Zhenyu', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);