function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aguilera, Gastón & Benitez, Mauricio & Terán, Guillermo Enrique', 1],
    ['Ahl, E.', 1],
    ['Azpelicueta, Maria De Las Mercedes & Mirande, Juan Marcos', 1],
    ['Boeseman, M.', 1],
    ['Buckup, P. A.', 1],
    ['Carlos Donascimiento & John G. Lundberg', 1],
    ['Depra, Gabriel de Carvalho & Aguilera, Gaston', 2],
    ['Haseman, J. D.', 1],
    ['Ihering, R. von', 1],
    ['Koerber, Stefan & Litz, Thomas O.', 1],
    ['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', 1],
    ['Mees, G. F.', 2],
    ['Steindachner, F.', 2],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);