function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angrisano, Elisa B. & Sganga, Julieta V.', 2],
    ['Ebejer, Martin J. & Gatt, Paul', 1],
    ['Evenhuis, Neal L.', 1],
    ['Evenhuis, Neal L. & Pape, Thomas', 1],
    ['Garrouste, Romain & Azar, Dany & Nel, Andre', 2],
    ['Hassan, Samir A. & El-Hawagry, Magdi S. A.', 1],
    ['Irwin, Michael E. & Wiegmann, Brian M.', 1],
    ['Kröber, Otto', 1],
    ['Metz, Mark A.', 2],
    ['Metz, Mark A. & Winterton, Shaun L. & Irwin, Michael E.', 2],
    ['Winterton, Shaun L.', 5],
    ['Winterton, Shaun L. & Gaimari, Stephen D.', 4],
    ['Winterton, Shaun L. & Gharali, Babak', 4],
    ['Winterton, Shaun L. & Kerr, Peter H.', 2],
    ['Winterton, Shaun L. & Woodley, Norman E.', 4],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=39)',
    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);