function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bertolino, Marco & Cerrano, Carlo & Bavestrello, Giorgio', 1],
    ['Calcinai, Barbara & Bavestrello, Giorgio & Bertolino, Marco', 2],
    ['Cardone, Frine & Pansini, Maurizio & Corriero, Giuseppe', 1],
    ['Díaz, M. Cristina & Pomponi, Shirley A.', 1],
    ['Evcen, Alper & Çinar, Melih Ertan & Zengin, Mustafa', 1],
    ['Goodwin, Claire & Brickle, Paul', 2],
    ['Goodwin, Claire E. & Berman, Jade & Hendry, Katharine R.', 2],
    ['Goodwin, Claire E. & Picton, Bernard E.', 14],
    ['Rützler, Klaus & Piantoni, Carla & Van, Rob W. M.', 2],
    ['Salani, Sula & Willenz, Philippe & Fernandez, Julio C. C.', 5],
    ['Turner, Thomas L. & Lonhart, Steve I.', 1],
    ['Van Soest, Rob W. M.', 2],
    ['Van, Rob W. M.', 3],
    ['Van, Rob W. M. & Kaiser, Kirstie L. & Syoc, Robert Van', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);