function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bollino, Maurizio & Costa, Mauro', 32],
    ['Braby, Michael F. & Nishida, Kenji', 8],
    ['Butler, Arthur Gardiner', 1],
    ['Huertas, Blanca & Prieto, Carlos & Montero, Fredy & Adams, Mike', 1],
    ['Lamas, Gerardo & Bollino, Maurizio', 13],
    ['Nakahara, Shinichi & Macdonald, John R. & Delgado, Francisco', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=56)',
    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);