function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anisyutkin, Leonid N.', 2],
    ['Engel, Michael S.', 2],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 2],
    ['Kamimura, Yoshitaka & Ferreira, Rodrigo L.', 1],
    ['Karthik, C. M. & Kalleshwaraswamy, C. M.', 2],
    ['Karthik, Chikkabidare M. & Kamimura, Yoshitaka', 1],
    ['Kočárek, Petr', 1],
    ['MACHÁýKOVÁ, Lenka & FIKÁýEK, Martin', 2],
    ['Miles, Claire', 18],
    ['O’Hara, James E. & Cerretti, Pierfilippo & Pape, Thomas', 1],
    ['Popham, Edward J.', 1],
    ['Ross, Andrew J. & Engel, Michael S.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);