function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baugh, S. C.', 1],
    ['Bhalerao, G. D.', 1],
    ['Calhoun, Dana M. & Dronen, Norman O.', 18],
    ['Campião, Karla Magalhães & Morais, Drausio Honorio', 6],
    ['Dollfus, R. P.', 2],
    ['Dronen, Norman O. & Calhoun, Dana M. & Simcik, Steven R.', 22],
    ['Fischthal, Jacob H. & Kuntz, Robert E', 1],
    ['Johnston, S. J.', 3],
    ['López-García, Ashley Samara & García-Prieto, Luis', 3],
    ['Maeder, A. M.', 1],
    ['Paredes-León, Ricardo & García-Prieto, Luis', 1],
    ['Vercammen-Grandjean, P. H.', 3],
    ['Wang, P. - q.', 1],
    ['Wang, P. - q. & Sun, Yu-lan & Zhao, Yu-ru & Zhang, Wen-huan', 1],
    ['Xue, Xiao-Feng & Song, Zi-Wei & Hong, Xiao-Yue', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=65)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);