function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bertora, Andrea & Grosman, Fabián & Sanzano, Pablo', 1],
    ['Bogan, Sergio & de los Reyes, Martín L. & Cenizo, Marcos M.', 1],
    ['De Oliveira, Rianne C. & Ota, Renata R. & Deprá, Gabriel C.', 1],
    ['Gastón Aguilera & Juan Marcos Mirande', 7],
    ['Ghedotti, Michael J. & Weitzman, Stanley H.', 2],
    ['Koerber, Stefan & Azpelicueta, María De Las Mercedes', 2],
    ['Koerber, Stefan & Litz, Thomas O. & Mirande, Juan Marcos', 1],
    ['Koerber, Stefan & Litz, Thomas O. & Serra, Wilson S.', 1],
    ['Litz, Thomas O. & The, Stefan Koerber Introduction', 3],
    ['Saravia, Alejandro Nicolás & Mettola, Víctor Ezequiel', 1],
    ['Soricetti, Mariano & Morawicki, Santiago', 1],
    ['The, Stefan Koerber', 1],
    ['de Lucinda, P. H. F. & Reis, Roberto E. & Quevedo, R.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    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);