function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Araújo, Diogo & Alves, Marccus', 1],
    ['Costa, Swami Leitão & Johanes, Isabella & Lohmann, Lúcia Garcez', 2],
    ['Flor, Ismael Cividini & Flor, Jandira Chachá Ribeiro', 1],
    ['Hentz Júnior, Elmar J. & Lohmann, Lúcia G. & Caxambu, Marcelo G.', 3],
    ['Maia, Valéria Cid & Mascarenhas, Bernardo', 1],
    ['Pace, Marcelo R. & Marcati, Carmen R. & Lohmann, Lúcia G.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=9)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);