function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bonyadi Naeini, Alieh & Rahimian, Hassan', 2],
    ['Costa, Dimitri de Araujo & Dolbeth, Marina & Prata, Jessica', 1],
    ['De Assis, Jose Eriberto & de Brito, Rafael Justino', 19],
    ['Faulwetter, Sarah & Simboura, Nomiki & Katsiaras, Nikolaos', 4],
    ['Hanley, J. Russell & Burke, Melanie', 3],
    ['Kinberg, Johan Gustaf Hjalmar', 1],
    ['Mikac, Barbara', 1],
    ['Muir, Alexander I. & Bamber, Roger N.', 1],
    ['Ribas, Julia & Hutchings, Pat', 1],
    ['Salazar-Vallejo, Sergio I. & Carrera-Parra, Luis F.', 1],
    ['Tasso, Vicente & El Haddad, Mustapha & Assadi, Carolina', 1],
    ['Valencia-Soto, David', 2],
    ['Çinar, Melih Ertan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);