function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amorim, Bruno S. & Alves, Marccus', 1],
    ['Jarvis, Charlie', 2],
    ['Lourenço, Ana Raquel & Alves, Marccus', 2],
    ['Sobral, M. & Souza, M. C. & Mazine-Capelo, F. & Lucas, E.', 1],
    ['Sobral, Marcos & Grippa, Carlos R. & Souza, Marcelo C.', 1],
    ['do Rosário, Alessandro Silva & Baumgratz, José Fernando Andrade', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=8)',
    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);