function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Lam, Truong Xuan', 1],
    ['Popov, Yuri A. & Chłond, Dominik', 3],
    ['Tatarnic, Nikolai J. & Cassis, Gerasimos', 2],
    ['Tatarnic, Nikolai J. & Wall, Michael A. & Cassis, Gerasimos', 7],
    ['Thorpe, Stephen E.', 2],
    ['Uhler, P. R.', 2],
    ['Usinger, Robert L.', 1],
    ['Wygodzinsky, Pedro W.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);