function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Branch, M. L. & Hayward, P. J.', 1],
    ['Dick, Matthew H. & Tilbrook, Kevin J. & Mawatari, Shunsuke F.', 1],
    ['Figuerola, Blanca & Gordon, Dennis P. & Cristobo, Javier', 2],
    ['Gerovasileiou, Vasilis & Rosso, Antonietta', 2],
    ['Gordon, Dennis P.', 1],
    ['Grischenko, Andrei V. & Dick, Matthew H. & Mawatari, Shunsuke F.', 1],
    ['Hayward, Peter J. & Winston, Judith E.', 2],
    ['López-Gappa, Juan & Liuzzi, María G. & Castro, Karen L.', 1],
    ['Souto, Javier & Reverter-Gil, Oscar', 1],
    ['Vieira, Leandro M. & Gordon, Dennis P. & Souza, Facelucia B. C.', 1],
    ['Vieira, Leandro M. & Stampar, Sergio N.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);