function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 1],
    ['Borges, Paulo A. V. & Gaspar, Clara', 4],
    ['Chen, Xiaoxiao & Hui, Ziyan & Huang, Min', 2],
    ['Cline, Andrew R. & Skelley, Paul E.', 1],
    ['Dasgupta, J. & Pal, T. K.', 1],
    ['Dobson, Ronald M.', 1],
    ['Kirejtshuk, A. G. & Kovalev, A. V.', 2],
    ['Lasoń, Andrzej & Ghahari, Hassan', 7],
    ['Majka, Christopher & Webster, Reginald & Cline, Andrew', 4],
    ['Powell, Gareth S.', 4],
    ['Powell, Gareth S. & Cline, Andrew R.', 3],
    ['Powell, Gareth S. & Martin, Gavin J.', 13],
    ['Powell, Gareth S. & Schnepp, Kyle E.', 5],
    ['Reed, Sharon E. & Dutkiewicz, David & Ross, Fiona', 5],
    ['Semeraro, Linda & Blacket, Mark J. & Rako, Lea', 2],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=60)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);