function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Béthoux, Olivier', 1],
    ['Cherchesova, S. K & Shioloshvili, M. N & Yakimov, A. V.', 2],
    ['Darilmaz, Mustafa Cemal & Salur, Ali & Murányi, Dávid', 1],
    ['Earle, Jane I.', 2],
    ['Grubbs, Scott A. & Sheldon, Andrew L.', 1],
    ['Judson, Sarah W. & Nelson, C. Riley', 2],
    ['Kosterin, Oleg E. & Akimbekova, Nazymgul', 1],
    ['Stark, Bill P. & Hicks, Matthew B.', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    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);