function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['André Luiz G. Carvalho', 3],
    ['Cacciali, Pier & Köhler, Gunther', 4],
    ['Carvalho, André L. G. & Rivas, Luis Rolando & Céspedes, Ricardo', 1],
    ['Carvalho, André L. G. & Sena, Marco A. & Peloso, Pedro L. V.', 2],
    ['Kunz, Tobias Saraiva & Borges-Martins, Márcio', 3],
    ['MYERS, CHARLES W. & DONNELLY, MAUREEN A.', 1],
    ['Passos, Daniel Cunha & Lima, Daniel Cassiano', 2],
    ['Ribeiro-Júnior, Marco A.', 3],
    ['Uchoa, Lucas Rafael & Delfim, Fagner Ribeiro', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    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);