function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dole-Olivier, Marie-José & Galassi, Diana M. P. & Fiers, Frank', 1],
    ['Fiers, Frank & Ghenne, V. & Suárez-Morales, Eduardo', 1],
    ['Gutiérrez-Aguirre, M. A. & Cervantes-Martínez, A.', 1],
    ['Mercado-Salas, Nancy F. & Suárez-Morales, Eduardo', 3],
    ['Mercado-Salas, Nancy F. & Álvarez-Silva, Carlos', 1],
    ['Miracle, M. R. & Alekseev, V. & Monchenko, V. & Sentandreu, V.', 1],
    ['Pugh, P. J. A. & Dartnall, H. J. G. & McInnes, S. J.', 6],
    ['Reid, J. W. & Suárez-Morales, Eduardo', 1],
    ['Suárez-Morales, Eduardo & Mendoza, Fredy & Mercado-Salas, Nancy', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);