function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cavalcante-Silva, Amanda & Pereira, Rafael', 3],
    ['Desidério, Gleison Robson & Barcelos-Silva, Patrik', 4],
    ['Moreno, Lucas A. S. & Desidério, Gleison Robson', 4],
    ['Oláh, János & Johanson, Kjell Arne', 1],
    ['Paprocki, Henrique & Franca, Diogo', 16],
    ['Queiroz, Larissa L. & Dias, Everton S. & Calor, Adolfo R.', 1],
    ['Rueda Martín, Paola A. & Gibon, Francois-Marie', 16],
    ['Takiya, Daniela Maeda & Santos, Allan Paulo Moreira', 4],
    ['de Souza, Wagner Rafael M. & Lima, Lucas R. C. & Pes, Ana M. O.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=50)',
    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);