function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allen, Gerald R. Dr.', 1],
    ['Allen, Gerald R. Dr. & Boeseman, M.', 1],
    ['Allen, Gerald R. Dr. & Renyaan, S. J.', 1],
    ['Aqmal-Naser, Mohamad & Ali, Norsyafira Anis', 1],
    ['Chan, Jeffery C. F. & Tsang, Alphonse H. F. & Yau, Sze-man', 1],
    ['Morgan, David L. & Allen, Gerald R. & Pusey, Bradley J.', 2],
    ['Ng, Casey Keat Chuan & Lim, Teow Yeong & Ahmad, Amirrudin', 1],
    ['Roberts, Tyson R.', 1],
    ['Weber, M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);