function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barrio-Amorós, César L. & Brewer-Carías, Charles', 1],
    ['Castiglia, Riccardo & Annesi, Flavia & Bezerra, Alexandra M. R.', 2],
    ['Fischer, Wagner & Faria de Godoi, Raquel', 1],
    ['Harvey, Michael B. & Ugueto, Gabriel N. & Gutberlet, Ronald L.', 6],
    ['Koch, Claudia & Venegas, Pablo J. & Rödder, Dennis', 3],
    ['Landauro, Caroll Z. & García-Bravo, Antonio & Venegas, Pablo J.', 1],
    ['Ribeiro-Júnior, Marco A. & Amaral, Silvana', 2],
    ['Uchoa, Lucas Rafael & Delfim, Fagner Ribeiro', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);