function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 1],
    ['Bennett, Edward Turner', 2],
    ['Bleeker, Pieter', 1],
    ['Gaither, Michelle R. & Randall, John E.', 3],
    ['Gill, T. N.', 2],
    ['Guichenot, A.', 1],
    ['Lavenberg, R. J. & Yañez, A. L. A.', 1],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 1],
    ['Osório, B.', 1],
    ['Regan, C. T.', 1],
    ['Rüppell, Wilhem Peter Eduard Simon', 1],
    ['Sauvage, H. E.', 1],
    ['Schultz, Leonard P.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);