function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aqmal-Naser, Mohamad & Ali, Norsyafira Anis', 1],
    ['Bleeker, Pieter', 4],
    ['Chaux, J. & Fang, P. - W.', 1],
    ['Fowler, Henry Weed', 4],
    ['Gustiano, R. & Teugels, G. G. & Pouyaud, L.', 3],
    ['Hardenberg, J. D. F.', 1],
    ['Herre, Albert W. C. T. & Myers, G. S.', 1],
    ['Hui, Tan Heok & Peng, Kelvin Lim Kok & Huan, Liew Jia', 1],
    ['Ng, Casey Keat Chuan & Lim, Teow Yeong & Ahmad, Amirrudin', 1],
    ['Ng, H. H. Tan H. H.', 4],
    ['Pouyaud, L. & Gustiano, R. & Teugels, G. G.', 2],
    ['Pouyaud, L. & Teugels, G. G.', 1],
    ['Roberts, Tyson R.', 2],
    ['Roberts, Tyson R. & Vidthayanon, Chavalit', 3],
    ['Smith, H. M.', 3],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    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);