function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barraclough, David A.', 13],
    ['Barraclough, David A. & Colville, Jonathan F.', 2],
    ['Barraclough, Id. A. & Colville, Jonathan F. & Karolyi, Florian', 2],
    ['El-Hashash, Arafa Elsayed & Badrawy, Haitham Badrawy Mousa', 7],
    ['El-Hawagry, Magdi S. & Abdel-Dayem, Mahmoud S.', 1],
    ['González, Christian R. & Carvacho, Camila', 1],
    ['González, Christian R. & Elgueta, Mario & Carvacho, Camila', 47],
    ['Grimaldi, David A.', 5],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 4],
    ['Kosmann, Cecília & Lamas, Carlos José Einicker', 2],
    ['Meigen, Johann Wilhelm', 1],
    ['O’Hara, James E. & Cerretti, Pierfilippo & Pape, Thomas', 2],
    ['Sforzi, Alessandra & Sommaggio, Daniele', 7],
    ['Westwood, John O.', 8],
    ['Zhang, Junfeng', 2],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=105)',
    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);