function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Broad, Gavin R. & Shaw, Mark R. & Godfray, H. Charles J.', 4],
    ['Gadallah, Neveen S. & Ghahari, Hassan & Achterberg, Kees Van', 2],
    ['Ghahari, H. & Fischer, M. & Cetin, O. & Beyarslan, A.', 1],
    ['Koldas, T. & Aydogdu, M. & Beyarslan, A.', 2],
    ['Samin, Najmeh & Ghahari, Hassan & S, Neveen & Monaem, R.', 1],
    ['Stigenberg, Julia & Van Achterberg, Kees', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);