function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahl, E.', 2],
    ['Aqmal-Naser, Mohamad & Ali, Norsyafira Anis', 2],
    ['Bernt, Maxwell J. & Stiassny, Melanie L. J.', 2],
    ['Bleeker, Pieter', 2],
    ['Boulenger, George Albert', 5],
    ['Fowler, Henry Weed', 6],
    ['Günther, Albert Charles Lewis Gotthilf', 2],
    ['Heok Hee Ng', 7],
    ['Hui, Tan Heok & Peng, Kelvin Lim Kok & Huan, Liew Jia', 2],
    ['Ng, Casey Keat Chuan & Lim, Teow Yeong & Ahmad, Amirrudin', 5],
    ['Ng, H. H. Tan H. H.', 5],
    ['Ng, Heok Hee', 3],
    ['Ng, Heok Hee & Hadiaty, Renny K.', 2],
    ['Ng, Heok Hee & Kottelat, Maurice', 3],
    ['Sulaiman, Zohrah & Hui, Tan Heok & Lim, Kelvin Kok Peng', 5],
    ['Other (30)', 37]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=90)',
    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);