function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baumgardner, D. E. & Mccafferty, W. P.', 16],
    ['Baumgardner, David E. & Burian, Steven K. & Bass, David', 1],
    ['Molineri, Carlos', 3],
    ['Molineri, Carlos & Derka, Tomáš', 1],
    ['Molineri, Carlos & Zúñiga, María del Carmen & Ramos, Blanca C.', 3],
    ['Nascimento, Jeane M. C. & Molineri, Carlos', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    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);