function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Campos, Maurício & Mothes, Beatriz & Eckert, Rafael', 2],
    ['Diaz, Maria Cristina & Nuttall, Marissa & Pomponi, Shirley A.', 1],
    ['Rocha, Lívia & Moraes, Fernando & Salani, Sula & Hajdu, Eduardo', 5],
    ['Sandes, Joana & Rocha, Lívia & Pinheiro, Ulisses', 2],
    ['Santos, George Garcia & Sandes, Joana & Cabral, Abigail', 3],
    ['Setiawan, Edwin & Erpenbeck, Dirk & Wörheide, Gert', 4],
    ['Sim-Smith, Carina & Hickman, Cleveland & Kelly, Michelle', 1],
    ['Ugalde, Diana & Fernandez, Julio C. C. & Gómez, Patricia', 2],
    ['Van Soest, Rob W. M. & Meesters, Erik H. W. G.', 3],
    ['Van, Rob W. M.', 2],
    ['Vicente, Jan & Ríos Andrés, Jaime & Zea, Sven & Toonen, Robert', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);