function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abu El-Ghiet, Usama M. & Edmardash, Yusuf A.', 1],
    ['Broad, Gavin R. & Shaw, Mark R. & Godfray, H. Charles J.', 6],
    ['Gadallah, Neveen S. & Ghahari, Hassan & Achterberg, Kees Van', 4],
    ['Ghahari, H. & Fischer, M. & K. J & O. C & Beyarslan, A.', 1],
    ['Haliday, Alexander Henry', 1],
    ['Hovorka, Tomáš & Macek, Jan', 1],
    ['Samin, Najmeh & Ghahari, Hassan & I, Boyerahmad.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);