function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Yong-Ming & Gibson, Gary A. P. & Peng, Ling-Fei', 5],
    ['Dale-Skey, Natalie & Askew, Richard R. & Noyes, John S.', 6],
    ['Fusu, Lucian & Ebrahimi, Ebrahim & Siebold, Cedric', 9],
    ['Gibson, Gary A. P.', 5],
    ['Gibson, Gary A. P. & Dewhurst, Charles & Makai, Simon', 2],
    ['Narendran, T. C.', 13],
    ['Peng, Lingfei & Gibson, Gary A. P. & Tang, Lu & Xiang, Jiawei', 19],
    ['Peng, Lingfei & Tang, Lu & Gibson, Gary A. P.', 7],
    ['Pérez-Benavides, A. Lucía & Hernández-Baz, Fernando', 1],
    ['Yang, Zhong-Qi & Choi, Wan-Yuong & Cao, Liang-Ming', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=68)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);