function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Berneck, Bianca V. M. & Targino, Mariane', 2],
    ['Caramaschi, Ulisses & Canedo, Clarissa', 1],
    ['Giaretta, Ariovaldo Antonio & Toffoli, Daniel', 1],
    ['Martins, Itamar A. & Haddad, Célio F. B.', 1],
    ['Silva-Soares, Thiago & Malagoli, Leo Ramos', 1],
    ['Taucce, Pedro P. G. & Zaidan, Bárbara F. & Zaher, Hussam', 1],
    ['Taucce, Pedro Paulo Goulart & Canedo, Clarissa', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=9)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);