function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida, Thaís Melo de & Stefanello, Fabiano & Hamada, Neusa', 4],
    ['Castro-Huertas, Valentina & Minghetti, Eugenia', 1],
    ['Cianferoni, Fabio & Nardi, Gianluca', 1],
    ['Coscarón, María Del Carmen', 1],
    ['Fent, Meral & Kment, Petr & Çamur-Elipek, Belgin & Kirgiz, Timur', 2],
    ['Ghahari, Hassan & Moulet, Pierre & Ostovan, Hadi', 1],
    ['Linnavuori, Rauno E.', 1],
    ['Mazzucconi, Silvia Ana & Reyes, Cristina Armúa De', 2],
    ['Moreira, Felipe Ferraz Figueiredo & Barbosa, Julianna Freires', 7],
    ['Nel, André & Waller, Alain', 1],
    ['Polhemus, Dan A. & Polhemus, John T.', 2],
    ['Riviaux, Senén Muñoz & Moreira, Felipe Ferraz Figueiredo', 2],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1],
    ['Yildirim, E. & Yazici, G. & Moulet, P.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    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);