function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bleeker, Pieter', 1],
    ['Chandramouli, S. R.', 3],
    ['David, Patrick & Vogel, Gernot', 2],
    ['Figueroa, Alex & Low, Martyn E. Y. & Lim, Kelvin K. P.', 13],
    ['Grismer, L. Lee & Neang, Thy & Chav, Thou & Wood, Perry L. & Jr', 1],
    ['Hakim, Jonathan & Trageser, Scott J. & Ghose, Animesh', 1],
    ['Kaup, Johann Jakob', 1],
    ['Köhler, Gunther & Khaing, Khin Pa Pa & Than, Ni Lar', 3],
    ['Lacépède, Bernard Germain Étienne de', 1],
    ['Murphy, John C.', 11],
    ['Murphy, John C. & Mumpuni & Lang, Ruud de & Gower, David J.', 7],
    ['Murphy, John C. & Voris, Harold K.', 1],
    ['Murphy, John C. & Voris, Harold K. & Auliya, Mark', 1],
    ['Murphy, John C. & Voris, Harold K. & Karns, Daryl R.', 5],
    ['Murphy, John C. & Voris, Harold K. & Traub, Joshua', 6],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=60)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);