function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blyth, E.', 1],
    ['Dale-Skey, Natalie & Askew, Richard R. & Noyes, John S.', 18],
    ['Darling, D. Christopher & Yoo, Jeong', 11],
    ['Day, F.', 1],
    ['Heraty, John M. & Darling, Christopher', 1],
    ['Jerdon, T. C.', 4],
    ['Madl, Michael', 4],
    ['McClelland, J.', 11],
    ['Mifsud, David & Askew, Richard R.', 1],
    ['Mitroiu, Mircea-Dan & Koutsoukos, Evangelos', 18],
    ['PEÑALVER, ENRIQUE & ENGEL, MICHAEL S', 1],
    ['Plecas, Milan & Zikic, Vladimir & Kocic, Korana', 1],
    ['Walker, Francis', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=75)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);