function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Basumatary, Sudem & Choudhury, Hrishikesh & Baishya, Ratul A.', 2],
    ['Dahanukar, Neelesh & Kumkar, Pradeep & Katwate, Unmesh', 1],
    ['Geetakumari, K. & Kadu, Kento', 1],
    ['Geetakumari, K. & Vishwanath, Waikhom', 1],
    ['Kullander, Sven & Norén, Michael & Rahman, Md. Mizanur', 4],
    ['Kullander, Sven O. & Britz, Ralf', 6],
    ['Praveenraj, Jayasimhan', 1],
    ['Valdesalici, Stefano & Voort, Stefan Van Der', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    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);