function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Hora, S. L. & Mukerji, D. D.', 1],
    ['Hui, Tan Heok & Peng, Kelvin Lim Kok & Huan, Liew Jia', 4],
    ['Kullander, Sven O. & Britz, Ralf', 2],
    ['Kullander, Sven O. & Fang, Fang', 1],
    ['Kullander, Sven O. & Norén, Michael', 1],
    ['Kullander, Sven O. & Rahman, Md. Mizanur & Norén, Michael', 1],
    ['Meinken, H.', 1],
    ['Ng, Casey Keat Chuan & Lim, Teow Yeong & Ahmad, Amirrudin', 1],
    ['Sanger, Thomas J. & McCUNE, Amy R.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);