function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 1],
    ['Ho, Hsuan-Ching & Smith, David G. & Mccosker, John E.', 2],
    ['Ho, Hsuan-Ching & Smith, David G. & Tighe, Kenneth A.', 2],
    ['Melo, Marcelo R. S. & Nunan, Gustavo W. A. & Braga, Adriana C.', 1],
    ['Smith, David G. & Ho, Hsuan-Ching & Tashiro, Fumihito', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);