function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Costa, Cristiano S & Giribet FLS, Gonzalo', 1],
    ['Costa, Cristiano Sampaio & Chagas-Junior, Amazonas', 5],
    ['Evans, Richard', 1],
    ['Fletcher, J. J.', 1],
    ['Guilding, Lansdown', 1],
    ['Oliveira, Ivo De Sena & Wieloch, Alfredo Hannemann', 2],
    ['de Sena Oliveira, Ivo & Lacorte, Gustavo Augusto', 3],
    ['de Sena Oliveira, Ivo & Schaffer, Stefan & Kvartalnov, Pavel V.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    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);