function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barker, David G. & Barker, Tracy M. & Davis, Mark A.', 1],
    ['Fatihah-Syafiq, Muhamad & Badli-Sham, Baizul Hafsyam', 1],
    ['Figueroa, Alex & Low, Martyn E. Y. & Lim, Kelvin K. P.', 1],
    ['Mulcahy, Daniel G. & Lee, Justin L. & Miller, Aryeh H.', 1],
    ['Szyndlar, Zbigniew & Georgalis, Georgios L.', 1],
    ['Weinell, Jeffrey L. & Hooper, Errol & Leviton, Alan E.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=6)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);