function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Breure, Abraham S. H.', 6],
    ['Breure, Abraham S. H. & Ablett, Jonathan D.', 6],
    ['Breure, Abraham S. H. & Avila, Valentin Mogollon', 7],
    ['Oroño, Eugenia Salas', 5],
    ['Pizá, Julia & Cazzaniga, Néstor J.', 6],
    ['Salvador, Rodrigo B. & Cavallari, Daniel C.', 3],
    ['Salvador, Rodrigo B. & Cavallari, Daniel C. & Simone, Luiz R. L.', 1],
    ['Salvador, Rodrigo B. & Silva, Fernanda S. & Cavallari, Daniel C.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);