function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bleeker, Pieter', 9],
    ['Day, F.', 3],
    ['Hamilton, F. Buchanan', 5],
    ['Heok Hee Ng', 7],
    ['Heok Hee Ng & Bosco P. - L. Chan', 14],
    ['Heok Hee Ng & Heok Hui Tan', 15],
    ['Kner, R.', 8],
    ['Linnaeus, Carolus', 19],
    ['Ng, Casey Keat Chuan & Lim, Teow Yeong & Ahmad, Amirrudin', 12],
    ['Ng, H. H. Tan H. H.', 26],
    ['Ng, Heok Hee', 7],
    ['Ng, Heok Hee & Kottelat, Maurice', 5],
    ['Rafinesque, Constantine Samuel', 6],
    ['Sulaiman, Zohrah & Hui, Tan Heok & Lim, Kelvin Kok Peng', 12],
    ['Çiçek, Erdoğan & Fricke, Ronald & Eagderi, Soheil', 6],
    ['Other (59)', 78]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=232)',
    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);