function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boonzaaier-Davids, Melissa K. & Ma, Kevin C. K.', 1],
    ['Branch, M. L. & Hayward, P. J.', 1],
    ['Dick, Matthew H. & Grischenko, Andrei V. & Mawatari, Shunsuke F.', 3],
    ['Dick, Matthew H. & Ngai, Nguyen Danh & Doan, Hung Dinh', 1],
    ['Gerovasileiou, Vasilis & Rosso, Antonietta', 2],
    ['Gordon, Dennis P.', 13],
    ['Grischenko, Andrei V. & Dick, Matthew H. & Mawatari, Shunsuke F.', 1],
    ['Judith L Winston', 2],
    ['López-Gappa, Juan & Liuzzi, María G. & Castro, Karen L.', 1],
    ['Min, Bum Sik & Seo, Ji Eun & Grischenko, Andrei V.', 3],
    ['Ramalho, Laís V. & López-Fé, Carlos M. & Mateo-Ramírez, Angel', 1],
    ['Souto, Javier & Berning, Björn & Ostrovsky, Andrew N.', 1],
    ['Souto, Javier & Reverter-Gil, Oscar & Ostrovsky, Andrew N.', 1],
    ['Winston, Judith E. & Vieira, Leandro M.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);