function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barrio-Amorós, Cesar L. & Ortíz, Juan C.', 9],
    ['Barrio-Amorós, César L. & Brewer-Carías, Charles', 1],
    ['COLE, CHARLES J. & KOK, PHILIPPE J. R.', 1],
    ['Carvajal-Cogollo, Juan E. & Eguis-Avendaño, Jorge A.', 1],
    ['Kok, Philippe J. R.', 1],
    ['Meneses-Pelayo, Elson & Ramírez, Juan P.', 1],
    ['Ribeiro-Júnior, Marco A.', 6],
    ['Rivas, Gilson A. & Schargel, Walter E.', 1],
    ['Rivero-Blanco, Carlos & Schargel, Walter E.', 2],
    ['Rojas-Runjaic, Fernando J. M. & Infante-Rivero, Edwin E.', 1],
    ['Schargel, Walter E. & Rivas, Gilson A. & García-Pérez, Juan E.', 1],
    ['Sturaro, Marcelo José & Avila-Pires, Teresa C. S.', 4],
    ['Uchoa, Lucas Rafael & Delfim, Fagner Ribeiro', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    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);