function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 1],
    ['Bariche, Michel & Fricke, Ronald', 1],
    ['Bogorodsky, Sergey V. & Alpermann, Tilman J. & Mal, Ahmad O.', 2],
    ['De Vis, Charles Walter', 2],
    ['Du, Jianguo & Loh, Kar-Hoe & Hu, Wenjia & Zheng, Xinqing', 1],
    ['Esmaeili, Hamid Reza & Hamidan, Neshat', 1],
    ['Esmaeili, Hamid Reza & Jufaili, Saud Al & Masoumi, Amir Hassan', 1],
    ['Fowler, Henry Weed', 1],
    ['Macleay, William John', 5],
    ['McCulloch, Alan Riverstone & Waite, E. R.', 2],
    ['Mees, G. F. & Kailola, Patricia J.', 5],
    ['Montrouzier, X.', 1],
    ['Zainal Abidin, Danial Hariz & Lavoué, Sébastien', 2],
    ['de Laporte Castelnau La Ferté-Sénectère, Francis L.', 3],
    ['Çiçek, Erdoğan & Jawad, Laith & Eagderi, Soheil', 2],
    ['Other (6)', 6]
  ]);
  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);